Frequently Asked Questions (FAQ)
Important Notice / Official Contact
The only official email address for IHC2026 is the oneprovided on the “Contact” page.
https://www.ihc2026.org/contact/
https://www.ihc2026.org/contact/
Recent Top Questions!
Q. When will we be notified about the abstract acceptance?
A. The final acceptance and presentation type will be notified to all authors simultaneously in May 2026.
Q. I want to know the schedule of my presentation.
A. The program schedule will be notified to all authors in May 2026.
Q. I want to know the guidelines for poster presentation. (size, format, style, etc.)
A. The details will be notified to all authors in June 2026.
Q. I need a invitation letter.
A. Apply for the invitation letter from here: Apply for Invitation Letter
*This is not a visa support letter guaranteeing visa issuance. (For visa related information, please refer to the VISA SUPPORT website or “Visa” section below)
Q. I need documents to apply for the Visa
A. Please apply for Visa support form here: Visa Application Support-IHC2026
*Before applying, please refer to this website for details: VISA SUPPORT
Q. I want to submit an abstract
A. Call for abstracts has officially closed on January 15th.
Q. Can I give the presentation online?
A. No. This congress will not be held online.
Q. I cannot log-in to the Gala/Tour registration system with my Confit account.
A. The registration system used for the Tour and Gala dinner is operated under a different system to Confit.
Please create a new account from "Register now" at the bottom of this page: Gala / Tour Registration
Q. I have questions about the Gala / Tour
A. Please submit your questions about Gala and Tour from here: Gala / Tour Contact us
Q. When will we be notified about the abstract acceptance?
A. The final acceptance and presentation type will be notified to all authors simultaneously in May 2026.
Q. I want to know the schedule of my presentation.
A. The program schedule will be notified to all authors in May 2026.
Q. I want to know the guidelines for poster presentation. (size, format, style, etc.)
A. The details will be notified to all authors in June 2026.
Q. I need a invitation letter.
A. Apply for the invitation letter from here: Apply for Invitation Letter
*This is not a visa support letter guaranteeing visa issuance. (For visa related information, please refer to the VISA SUPPORT website or “Visa” section below)
Q. I need documents to apply for the Visa
A. Please apply for Visa support form here: Visa Application Support-IHC2026
*Before applying, please refer to this website for details: VISA SUPPORT
Q. I want to submit an abstract
A. Call for abstracts has officially closed on January 15th.
Q. Can I give the presentation online?
A. No. This congress will not be held online.
Q. I cannot log-in to the Gala/Tour registration system with my Confit account.
A. The registration system used for the Tour and Gala dinner is operated under a different system to Confit.
Please create a new account from "Register now" at the bottom of this page: Gala / Tour Registration
Q. I have questions about the Gala / Tour
A. Please submit your questions about Gala and Tour from here: Gala / Tour Contact us
Registration & Payment
The early-bird registration period has ended on January 31, 2026 (JST).Q. How do I register for the event?
A: To participate in IHC2026, registration in advance is required. Please find further details and proceed with the registration and payment from REGISTRATION.
Q. I do not understand the registration system for this congress.
IHC2026 uses three separate systems for registration:
1. Confit: For registration for attendance of the congress.
2. ROSA (ISHS): For abstract submission for oral/poster presentations.
3. Art-Tourist system: For options which are not included in the registration fee (i.e., post-congress tours, Gala Dinner, 1-day technical tours, and Scientific events on Aug. 28). This system is currently under preparation, please check our website for updates.
Q. How can I check/update my registration details?
A. Please log in Confit (the participant registration system), and select “View registration info”.
Q. How do I get my invoice/ receipt?
A. We kindly ask that you download your invoice/receipt as follows:
1. Log in with A-Pass：https://ihc.confit.atlas.jp/login
2. Go to ‘Registration Info’ and click ‘Invoice Download’ / ‘Receipt Download’
Q. I would like an invoice addressed to my institution or company. How can I request it?
A. Please contact to the management office: reg-ihc2026@convention.co.jp
Q: I cannot find the VAT number.
A. Japan does not operate under the VAT number system, so we are unable to provide a VAT number.
Q. What happens if I don’t pay within the Early bird registration period?
A. The registration will be cancelled, and they will have to reapply the registration with regular fees or on-site fees.
However, the presenting author will be required to complete the registration and payment for the registration fee to be listed on the presentation program.
Visit the Abstract Submission Guidelines for details.
Q. What does the registration fee include?
A. Inclusion differs with the categories. Visit REGISTRATION and refer to "Registration fee includes" for details.
Q. Can I register and pay for the congress after my abstract has been accepted?
A. The payment for the registration is required before the program is finalized.
The presenting author is requested to complete the registration and payment to be listed on the presentation program.
However, if the abstract is rejected, the registration fee will be refunded upon a request.
Please refer to the Abstract Submission Guidelines for details..
Q. I registered for the event, but my schedule has changed. Can I get a refund?
A. We’re sorry, but no refunds will be issued for any reason after the payment has been completed. Additionally, once payment is made, you cannot change your registration category or cancel any accompanying persons. Please make sure to finalize all details before proceeding with payment.
However, if your abstract was rejected, please contact to the management office and we will arrange a refund upon request.
Credit Card Error
Q. I received an error code ER000 or ER997 during payment. What do these codes mean?
A. These errors usually occur due to one of the following reasons:
- The registration or payment page was left open for more than 20 minutes without any activity.
- The Back button was used during the payment process.
To resolve this issue, please return to the registration page and start the process again from the beginning.
Q. I received an error code ER900 during payment.
A. This Error code is that you encountered a 3D Secure authentication error while attempting to complete your credit card payment. This type of error typically occurs when the authentication process required by your card issuer is not successfully completed.
To help resolve this issue, we kindly suggest the following steps:
1. Ensure your card is enrolled in 3D Secure (e.g., Verified by Visa, Mastercard Secure Code).
2. Check with your card issuer to confirm that your card supports 3D Secure and that there are no restrictions or blocks on online transactions.
3. Try using a different browser or device, as technical issues may sometimes interfere with the authentication process.
4. Attempt the transaction again, ensuring that all required authentication steps are completed.
Student Category
Q. Are there any discounts for students?
A. Yes. We offer a student registration category.
Visit REGISTRATION and refer to “Category and Registration Fee” for details.
Those who apply for “Student” are requested to upload the student ID card indicating his/her student status in the registration process.
Q. Are there any other documents accepted as the proof of student status?
A. Yes. An official certificate proving your current enrollment issued by your university is acceptable.
Accompanying Person
Q. How can I register an accompanying person?
A. An accompanying person can be registered from your Confit account (the participant registration system).
Please note that the accompanying person will not be allowed to attend scientific sessions or give oral/poster presentations.
Visit REGISTRATION for more information.
Q. How much is it to register an accompanying person?
A. ・Regular period fee (February 1, 2026 – June 15, 2026) : JPY 40,000 per person
・On-site period fee (June 16, 2026 – August 28, 2026) : JPY 50,000 per person
Please visit Category and registration fee for details.
Q. What does an accompanying person have access to?
A. Will have the access to the following:
・Entry for exhibition zone
・Opening ceremony and welcome reception on Aug. 23
・Coffee break
・Complimentary lunch for Aug. 24, 25, 26, and 27
・Opportunity for optional cultural experience tours for accompanying person (additional application and payment is required)
NOTE: Accompanying person is not allowed to enter scientific sessions, and not given an opportunity for oral or poster presentation.
Invitation Letter
Q. How can I apply for an invitation letter?
A. Please complete the form from “Apply for Invitation Letter”.
Please note that advance registration is required before applying for this letter.
This is not a visa support letter guaranteeing visa issuance. It is an invitation letter providing information that IHC 2026 will be held.
(For visa related information, please refer to the VISA SUPPORT website or “Visa” section below)
Q. What is the invitation letter for the IHC2026?
A. The invitation letter is issued providing the information that IHC2026 will be held.
Please note that this invitation letter is not a visa support letter and does not guarantee visa issuance.
(For visa related information, please refer to the VISA SUPPORT website or “Visa” section below)
Q. Is the invitation letter for visa application purposes?
A. No. The invitation letter application mentioned in the REGISTRATION page is not intended for visa application purposes.
It is intended solely to confirm that the IHC 2026 will be held.
(For visa related information, please refer to the VISA SUPPORT website or “Visa” section below)
A. Please contact to the management office: reg-ihc2026@convention.co.jp
Q: I cannot find the VAT number.
A. Japan does not operate under the VAT number system, so we are unable to provide a VAT number.
Q. What happens if I don’t pay within the Early bird registration period?
A. The registration will be cancelled, and they will have to reapply the registration with regular fees or on-site fees.
However, the presenting author will be required to complete the registration and payment for the registration fee to be listed on the presentation program.
Visit the Abstract Submission Guidelines for details.
Q. What does the registration fee include?
A. Inclusion differs with the categories. Visit REGISTRATION and refer to "Registration fee includes" for details.
Q. Can I register and pay for the congress after my abstract has been accepted?
A. The payment for the registration is required before the program is finalized.
The presenting author is requested to complete the registration and payment to be listed on the presentation program.
However, if the abstract is rejected, the registration fee will be refunded upon a request.
Please refer to the Abstract Submission Guidelines for details..
Q. I registered for the event, but my schedule has changed. Can I get a refund?
A. We’re sorry, but no refunds will be issued for any reason after the payment has been completed. Additionally, once payment is made, you cannot change your registration category or cancel any accompanying persons. Please make sure to finalize all details before proceeding with payment.
However, if your abstract was rejected, please contact to the management office and we will arrange a refund upon request.
Credit Card Error
Q. I received an error code ER000 or ER997 during payment. What do these codes mean?
A. These errors usually occur due to one of the following reasons:
- The registration or payment page was left open for more than 20 minutes without any activity.
- The Back button was used during the payment process.
To resolve this issue, please return to the registration page and start the process again from the beginning.
Q. I received an error code ER900 during payment.
A. This Error code is that you encountered a 3D Secure authentication error while attempting to complete your credit card payment. This type of error typically occurs when the authentication process required by your card issuer is not successfully completed.
To help resolve this issue, we kindly suggest the following steps:
1. Ensure your card is enrolled in 3D Secure (e.g., Verified by Visa, Mastercard Secure Code).
2. Check with your card issuer to confirm that your card supports 3D Secure and that there are no restrictions or blocks on online transactions.
3. Try using a different browser or device, as technical issues may sometimes interfere with the authentication process.
4. Attempt the transaction again, ensuring that all required authentication steps are completed.
Student Category
Q. Are there any discounts for students?
A. Yes. We offer a student registration category.
Visit REGISTRATION and refer to “Category and Registration Fee” for details.
Those who apply for “Student” are requested to upload the student ID card indicating his/her student status in the registration process.
Q. Are there any other documents accepted as the proof of student status?
A. Yes. An official certificate proving your current enrollment issued by your university is acceptable.
Accompanying Person
Q. How can I register an accompanying person?
A. An accompanying person can be registered from your Confit account (the participant registration system).
Please note that the accompanying person will not be allowed to attend scientific sessions or give oral/poster presentations.
Visit REGISTRATION for more information.
Q. How much is it to register an accompanying person?
A. ・Regular period fee (February 1, 2026 – June 15, 2026) : JPY 40,000 per person
・On-site period fee (June 16, 2026 – August 28, 2026) : JPY 50,000 per person
Please visit Category and registration fee for details.
Q. What does an accompanying person have access to?
A. Will have the access to the following:
・Entry for exhibition zone
・Opening ceremony and welcome reception on Aug. 23
・Coffee break
・Complimentary lunch for Aug. 24, 25, 26, and 27
・Opportunity for optional cultural experience tours for accompanying person (additional application and payment is required)
NOTE: Accompanying person is not allowed to enter scientific sessions, and not given an opportunity for oral or poster presentation.
Invitation Letter
Q. How can I apply for an invitation letter?
A. Please complete the form from “Apply for Invitation Letter”.
Please note that advance registration is required before applying for this letter.
This is not a visa support letter guaranteeing visa issuance. It is an invitation letter providing information that IHC 2026 will be held.
(For visa related information, please refer to the VISA SUPPORT website or “Visa” section below)
Q. What is the invitation letter for the IHC2026?
A. The invitation letter is issued providing the information that IHC2026 will be held.
Please note that this invitation letter is not a visa support letter and does not guarantee visa issuance.
(For visa related information, please refer to the VISA SUPPORT website or “Visa” section below)
Q. Is the invitation letter for visa application purposes?
A. No. The invitation letter application mentioned in the REGISTRATION page is not intended for visa application purposes.
It is intended solely to confirm that the IHC 2026 will be held.
(For visa related information, please refer to the VISA SUPPORT website or “Visa” section below)
Financial Support
Q. Do you offer financial support?
A. No. The IHC2026 is unable to provide financial support, waivers, or additional discounts for the registration fee.
There are discounted rates for students and participants from developing countries.
Please visit REGISTRAION for details about registration fee categories.
Q. Are there any scholarships or financial support available for people from developing countries?
A. We have prepared a special registration fee for developing countries, and you can find your country's category at the URL below.
https://datatopics.worldbank.org/world-development-indicators/the-world-by-income-and-region.html
The countries that qualify for the discounted registration are those classified by The World Bank in the “low-income” or “lower-middle-income” categories based on the current 2025 fiscal year definition.
Q. Are there any scholarships available for international students?
A. Unfortunately, we are unable to offer any scholarships or financial support for students.
There is a discounted registration fee for students. Please visit REGISTRAION for details about registration fee categories.
Q. Do you offer financial support?
A. No. The IHC2026 is unable to provide financial support, waivers, or additional discounts for the registration fee.
There are discounted rates for students and participants from developing countries.
Please visit REGISTRAION for details about registration fee categories.
Q. Are there any scholarships or financial support available for people from developing countries?
A. We have prepared a special registration fee for developing countries, and you can find your country's category at the URL below.
https://datatopics.worldbank.org/world-development-indicators/the-world-by-income-and-region.html
The countries that qualify for the discounted registration are those classified by The World Bank in the “low-income” or “lower-middle-income” categories based on the current 2025 fiscal year definition.
Q. Are there any scholarships available for international students?
A. Unfortunately, we are unable to offer any scholarships or financial support for students.
There is a discounted registration fee for students. Please visit REGISTRAION for details about registration fee categories.
Status of Abstract Submission
Call for abstracts has officially closed on January 15th.
Q. When will we be notified about the abstract acceptance?
A. The final acceptance and presentation type will be notified to all authors simultaneously in May 2026.
Q. How will I be notified about the acceptance of my abstract?
A. Notifications regarding abstract acceptance and assigned presentation types will be sent by email from symposiacontributions@ishs.org.
Q. How can I check my assigned presentation type?
A. Please refer to the "Presentation method confirmed by the convener" field in the acceptance email sent from symposiacontributions@ishs.org.
Q. In my acceptance email, the presentation type method was stated "to be confirmed", "No preference", what does this mean?
A. This indicates that your final presentation type has not yet been determined by the conveners.
To confirm the updated status and presentation type of your submission, please contact the conveners of the relevant symposium.
The contact details of the conveners can be found on each symposium page.
Q. How can I confirm the latest status of my presentation type?
A. Please contact the conveners of the relevant symposium directly.
The contact details of the conveners can be found on each symposium page.
Q. What happens if I have not completed my registration and payment at the time my abstract is accepted?
A. If registration and payment are not completed, the abstract will not be included in the program.
Q. Do I need to pay both the abstract submission fee and the conference registration fee (on Confit) for my abstract to be considered?
A. For ISHS Individual members, the abstract submission charge is fully waived. Therefore, only the conference registration fee (on Confit) is required.
If you are not a member of ISHS, and do not plan to become one, you must pay both fees.
Please refer to the Abstract Submission Guidelines for details.
Q. Can I register and pay for the congress after my abstract has been accepted?
A. The payment for the registration is required before the program is finalized.
The presenting author is requested to complete the registration and payment to be listed on the presentation program.
However, if the abstract is rejected, the registration fee will be refunded upon a request.
Please refer to Abstract Submission Guidelines.
Abstract Modification
Q. How can I edit my abstract submission?
A. Please contact the conveners of each symposium to which you have submitted your abstract.
The contact details of the conveners can be found on each symposium page.
Q. Until when can I modify my submitted abstract?
A. Abstract modifications are accepted until the end of February.
Q. Where do I contact to request the abstract modification?
A. Please contact both:
・Conveners of the corresponding symposium. The contact details of the conveners can be found on each symposium page.
・IHC2026 program admin office (p-ihc2026@convention.co.jp) for modification.
Acta Horticulturae Manuscript Submission
Q. When is the deadline for manuscript submission?
A. 15 June 2026
Q. How do I set up an ISHS account?
A. Please visit the following link: ISHS new membership
Q. How can I submit my manuscript to Acta Horticulturae?
A. There are 2 ways to access the ROSA system for submission;
・Via the Link in Your Email: Use the unique URL provided in your abstract acceptance email from symposiacontributions@ishs.org to access the submission page directly.
・Via Your ROSA Account: Login from Access to ROSA. After log-in, select author task of the corresponding symposium from the list, then “edit existing submission” link will be active. From this link, you can also submit the manuscript.
Q. Are there manuals or guidelines I should refer to before submitting my manuscript?
A. Please refer to the following resources before the submission:
・ROSA Online Submission Manual: Online Submission Authors Guide (PDF)
・Author Guidelines: ISHS Authors Guide for Acta Horticulturae including copyright
Q. Do all oral presenters need to submit a manuscript?
A. Yes. All oral presenters, including invited and keynote speakers, must submit a manuscript for publication in the Acta Horticulturae proceedings.
Please refer to the Authors Guide for Acta Horticulturae and Abstract Submission Guidelines.
Q. Do poster presenters need to submit a manuscript?
A. Presenters of posters are strongly encouraged to prepare and submit a manuscript for publication in the Acta Horticulturae proceedings.
Please refer to the Authors Guide for Acta Horticulturae.
Q. What happens if an oral presenter does not submit a manuscript?
A. Oral presenters Oral presenters who fail to submit a manuscript for publication in Acta Horticulturae or the ISHS Scientific Journal may be refused the floor for making their oral presentation.
Please refer to the Abstract Submission Guidelines.
Q. Where can I find the Acta Horticulturae author guidelines?
A. Authors Guide for Acta Horticulturae.
Q. Do I need to register to submit a manuscript?
A. Registration is mandatory at the time of abstract submission, to be included in the program and for the work to be published in Acta Horticulturae. Failure to register will result in the withdrawal of your abstract and manuscript.
Please refer to Acta Horticulturae Manuscript Submission.
Q. What happens if I do not complete the registration?
A. If the registration and payment are not completed, your abstract and manuscript will be withdrawn and will not be included in the program or published.
Q. Does submitting a manuscript to Acta Horticulturae prevent me from publishing the work in a peer-reviewed scientific journal?
A. Submission of a manuscript to Acta Horticulturae does not preclude aspects of the work that are contained in a proceedings manuscript from being published in a manuscript prepared for a peer-reviewed scientific journal. However, author(s) must be aware that some scientific journals may have restrictions on publication of material that is very similar to material that has been published in conference proceedings. Publication in Acta Horticulturae must be approved by all co-authors, if any, as well as – tacitly or explicitly – by the responsible authorities at the institution where the work was carried out.
Please refer to Authors Guide for Acta Horticulturae.
Q. I have some trouble submitting my manuscript on ROSA
A. Check out the manual here: Online Submission Authors Guide (PDF)
Q. Where can I find detailed guidelines on manuscript length, format, style, etc.?
A. Please refer to Authors Guide for Acta Horticulturae.
Q. I want to know the guidelines for poster presentation. (size, format, style, etc.)
A. The details will be notified to all authors in June 2026.
Call for abstracts has officially closed on January 15th.
Q. When will we be notified about the abstract acceptance?
A. The final acceptance and presentation type will be notified to all authors simultaneously in May 2026.
Q. How will I be notified about the acceptance of my abstract?
A. Notifications regarding abstract acceptance and assigned presentation types will be sent by email from symposiacontributions@ishs.org.
Q. How can I check my assigned presentation type?
A. Please refer to the "Presentation method confirmed by the convener" field in the acceptance email sent from symposiacontributions@ishs.org.
Q. In my acceptance email, the presentation type method was stated "to be confirmed", "No preference", what does this mean?
A. This indicates that your final presentation type has not yet been determined by the conveners.
To confirm the updated status and presentation type of your submission, please contact the conveners of the relevant symposium.
The contact details of the conveners can be found on each symposium page.
Q. How can I confirm the latest status of my presentation type?
A. Please contact the conveners of the relevant symposium directly.
The contact details of the conveners can be found on each symposium page.
Q. What happens if I have not completed my registration and payment at the time my abstract is accepted?
A. If registration and payment are not completed, the abstract will not be included in the program.
Q. Do I need to pay both the abstract submission fee and the conference registration fee (on Confit) for my abstract to be considered?
A. For ISHS Individual members, the abstract submission charge is fully waived. Therefore, only the conference registration fee (on Confit) is required.
If you are not a member of ISHS, and do not plan to become one, you must pay both fees.
Please refer to the Abstract Submission Guidelines for details.
Q. Can I register and pay for the congress after my abstract has been accepted?
A. The payment for the registration is required before the program is finalized.
The presenting author is requested to complete the registration and payment to be listed on the presentation program.
However, if the abstract is rejected, the registration fee will be refunded upon a request.
Please refer to Abstract Submission Guidelines.
Abstract Modification
Q. How can I edit my abstract submission?
A. Please contact the conveners of each symposium to which you have submitted your abstract.
The contact details of the conveners can be found on each symposium page.
Q. Until when can I modify my submitted abstract?
A. Abstract modifications are accepted until the end of February.
Q. Where do I contact to request the abstract modification?
A. Please contact both:
・Conveners of the corresponding symposium. The contact details of the conveners can be found on each symposium page.
・IHC2026 program admin office (p-ihc2026@convention.co.jp) for modification.
Acta Horticulturae Manuscript Submission
Q. When is the deadline for manuscript submission?
A. 15 June 2026
Q. How do I set up an ISHS account?
A. Please visit the following link: ISHS new membership
Q. How can I submit my manuscript to Acta Horticulturae?
A. There are 2 ways to access the ROSA system for submission;
・Via the Link in Your Email: Use the unique URL provided in your abstract acceptance email from symposiacontributions@ishs.org to access the submission page directly.
・Via Your ROSA Account: Login from Access to ROSA. After log-in, select author task of the corresponding symposium from the list, then “edit existing submission” link will be active. From this link, you can also submit the manuscript.
Q. Are there manuals or guidelines I should refer to before submitting my manuscript?
A. Please refer to the following resources before the submission:
・ROSA Online Submission Manual: Online Submission Authors Guide (PDF)
・Author Guidelines: ISHS Authors Guide for Acta Horticulturae including copyright
Q. Do all oral presenters need to submit a manuscript?
A. Yes. All oral presenters, including invited and keynote speakers, must submit a manuscript for publication in the Acta Horticulturae proceedings.
Please refer to the Authors Guide for Acta Horticulturae and Abstract Submission Guidelines.
Q. Do poster presenters need to submit a manuscript?
A. Presenters of posters are strongly encouraged to prepare and submit a manuscript for publication in the Acta Horticulturae proceedings.
Please refer to the Authors Guide for Acta Horticulturae.
Q. What happens if an oral presenter does not submit a manuscript?
A. Oral presenters Oral presenters who fail to submit a manuscript for publication in Acta Horticulturae or the ISHS Scientific Journal may be refused the floor for making their oral presentation.
Please refer to the Abstract Submission Guidelines.
Q. Where can I find the Acta Horticulturae author guidelines?
A. Authors Guide for Acta Horticulturae.
Q. Do I need to register to submit a manuscript?
A. Registration is mandatory at the time of abstract submission, to be included in the program and for the work to be published in Acta Horticulturae. Failure to register will result in the withdrawal of your abstract and manuscript.
Please refer to Acta Horticulturae Manuscript Submission.
Q. What happens if I do not complete the registration?
A. If the registration and payment are not completed, your abstract and manuscript will be withdrawn and will not be included in the program or published.
Q. Does submitting a manuscript to Acta Horticulturae prevent me from publishing the work in a peer-reviewed scientific journal?
A. Submission of a manuscript to Acta Horticulturae does not preclude aspects of the work that are contained in a proceedings manuscript from being published in a manuscript prepared for a peer-reviewed scientific journal. However, author(s) must be aware that some scientific journals may have restrictions on publication of material that is very similar to material that has been published in conference proceedings. Publication in Acta Horticulturae must be approved by all co-authors, if any, as well as – tacitly or explicitly – by the responsible authorities at the institution where the work was carried out.
Please refer to Authors Guide for Acta Horticulturae.
Q. I have some trouble submitting my manuscript on ROSA
A. Check out the manual here: Online Submission Authors Guide (PDF)
Q. Where can I find detailed guidelines on manuscript length, format, style, etc.?
A. Please refer to Authors Guide for Acta Horticulturae.
Q. I want to know the guidelines for poster presentation. (size, format, style, etc.)
A. The details will be notified to all authors in June 2026.
Symposiums
Q. When will we be notified about the program schedule?
A. The program schedule will be notified to all authors in May 2026.
Q. How many simposiums are included in the scientific program of IHC2026?
A. The scientific program for the IHC2026 comprises of 27 symposia that reflect the the theme of “Exploring the Diversity of Horticulture”.
Q. Can I still submit abstracts?
A. No. The submission period for abstracts has closed (15 January, 2026)
Q. When will the list of speakers be published?
A. We will announce the program, including the list of speakers, at the end of April 2026.
Q. Do I need to register to be included in the presentation program?
A. Yes. The Presenting Author must complete the registration and payment for the registration fee to be listed on the presentation program.
Q. What happens if my abstract is rejected after I register?
A. If the abstract is rejected, the registration fee will be refunded upon a request.
Q. Can I give the presentation online?
A. No. This congress will not be held online.
Q. How can I contact the conveners of the symposium?
A. The contact details of the conveners can be found on each symposium page.
Q. When will we be notified about the program schedule?
A. The program schedule will be notified to all authors in May 2026.
Q. How many simposiums are included in the scientific program of IHC2026?
A. The scientific program for the IHC2026 comprises of 27 symposia that reflect the the theme of “Exploring the Diversity of Horticulture”.
Q. Can I still submit abstracts?
A. No. The submission period for abstracts has closed (15 January, 2026)
Q. When will the list of speakers be published?
A. We will announce the program, including the list of speakers, at the end of April 2026.
Q. Do I need to register to be included in the presentation program?
A. Yes. The Presenting Author must complete the registration and payment for the registration fee to be listed on the presentation program.
Q. What happens if my abstract is rejected after I register?
A. If the abstract is rejected, the registration fee will be refunded upon a request.
Q. Can I give the presentation online?
A. No. This congress will not be held online.
Q. How can I contact the conveners of the symposium?
A. The contact details of the conveners can be found on each symposium page.
Accommodation
Q. Do you have any recommendations for hotel accommodations？
A. You can find a list of hotels near the ICC Kyoto venue on its official website. We hope this helps you arrange your stay. https://www.icckyoto.or.jp/en/accommodation/hotels-in-kyoto-2/
Q. Is there a special rate for IHC2026 participants?
A. Please note that no special rates are available for IHC2026.
Q. Do you have any recommendations for hotel accommodations？
A. You can find a list of hotels near the ICC Kyoto venue on its official website. We hope this helps you arrange your stay. https://www.icckyoto.or.jp/en/accommodation/hotels-in-kyoto-2/
Q. Is there a special rate for IHC2026 participants?
A. Please note that no special rates are available for IHC2026.
Visa
For visa-related inquiries, please contact here.
Please note that participant registration on Confit is mandatory for Visa support.
Q: When will visa related documents for IHC2026 be available?
A. Visa applications for short-term stays in Japan can be submitted starting three months before your intended date of entry. Since IHC2026 begins on August 23rd, 2026, the issuance of documents will start from the end of May, 2026.
Visit VISA SUPPORT for details.
Q. How do I know if I need a Visa to enter Japan?
A. Visit Exemption of Visa (Short-Term Stay) (official website of the Ministry of Foreign Affairs) to confirm whether your country is exempt from visa requirements or if you need to apply for a visa.
Q. I want information about visa application procedures.
A. Please refer to, Visa Support and Visa Information (MOFA) provided by the Ministry of Foreign Affairs of Japan for details.
Q. How do I apply for Visa support?
A. Visa support documents can be requested through the application system on the congress website.
Please note that the issuance of documents will start from the end of May, and it takes approximately 1 week to issue these documents.
Please refer to Visa Support for details.
Q. Does receiving visa support guarantee visa approval?
A. No. The issuance of visa support does not guarantee visa approval.
Visa approval is solely at the discretion of the Japan Embassy or Consulate in your country.
Q. Who can apply for Visa support?
A. Visa support is available to participants who:
・Have completed their congress registration from Confit
・Have fully paid the registration fee.
A valid registration number (Confit ID) is required before applying.
Q. Where can I apply for Visa support documents?
A. Application can be made from here.
Please visit and read the VISA SUPPORT page before applying.
Please note that the issuance of documents will start from the end of May, and it takes approximately 1 week to issue these documents.
Q. How much is the Visa Support?
A. The issuance fee is JPY13,200 per person.
Q. Can accompanying family members receive visa support?
A. Yes. Visa support documents can also be issued for accompanying immediate family members (spouse, children, or parents). An additional fee of JPY 1,100 JPY per accompanying person applies.
For visa-related inquiries, please contact here.
Please note that participant registration on Confit is mandatory for Visa support.
Q: When will visa related documents for IHC2026 be available?
A. Visa applications for short-term stays in Japan can be submitted starting three months before your intended date of entry. Since IHC2026 begins on August 23rd, 2026, the issuance of documents will start from the end of May, 2026.
Visit VISA SUPPORT for details.
Q. How do I know if I need a Visa to enter Japan?
A. Visit Exemption of Visa (Short-Term Stay) (official website of the Ministry of Foreign Affairs) to confirm whether your country is exempt from visa requirements or if you need to apply for a visa.
Q. I want information about visa application procedures.
A. Please refer to, Visa Support and Visa Information (MOFA) provided by the Ministry of Foreign Affairs of Japan for details.
Q. How do I apply for Visa support?
A. Visa support documents can be requested through the application system on the congress website.
Please note that the issuance of documents will start from the end of May, and it takes approximately 1 week to issue these documents.
Please refer to Visa Support for details.
Q. Does receiving visa support guarantee visa approval?
A. No. The issuance of visa support does not guarantee visa approval.
Visa approval is solely at the discretion of the Japan Embassy or Consulate in your country.
Q. Who can apply for Visa support?
A. Visa support is available to participants who:
・Have completed their congress registration from Confit
・Have fully paid the registration fee.
A valid registration number (Confit ID) is required before applying.
Q. Where can I apply for Visa support documents?
A. Application can be made from here.
Please visit and read the VISA SUPPORT page before applying.
Please note that the issuance of documents will start from the end of May, and it takes approximately 1 week to issue these documents.
Q. How much is the Visa Support?
A. The issuance fee is JPY13,200 per person.
Q. Can accompanying family members receive visa support?
A. Yes. Visa support documents can also be issued for accompanying immediate family members (spouse, children, or parents). An additional fee of JPY 1,100 JPY per accompanying person applies.
Tours
Q. How can I reserve the one-day technical tour and the post-congress tour?
A. Register from here.
This is a separate system from Confit, please create a new account from this registration system.
Q. Are the tours included in the registration fee?
A. No. The tours are not included. A separate fee is required in addition to the registering fee.
Q. I want details of the tours planned.
A. Please visit TOURS for details.
Q. What kind of tours are planned?
A. The following tour options are planned (please visit each link for details)
・One-Day Technical Tour
・Post Congress Tour
・Tours for Accompanying Persons
*Please note that a special scientific event is scheduled on the same day as the one-day tour. Participants are advisee to consider this when planning the schedule. Visit TOURS for details.
One-Day Technical Tour
Q. What is the One-Day Technical Tour?
A. It is a day trip scheduled on August 28, 2026, visiting facilities in prefectures neighboring to Kyoto Prefecture, the venue location.
Q. When does the One-Day Technical Tour take place?
A. August 28, 2026
Q. How much is the tour?
A. JPY 25,000 for each tour per person.
Q. How many tour options are there?
A. There are five tour courses, T1-T5.
Visit TOURS for detailed tour itinerary.
Q. Can I attend the Special Scientific Event and the One-Day Technical Tour on the same day?
A. No. The Special Scientific Event and the One-Day Technical Tour are scheduled for the same fay. You cannot attend both.
Q. Can dietary restrictions be accommodated during the tour lunches?
A. No. We will not be able to accommodate dietary restrictions (vegetarian, halal, etc.), during lunch on the tours. It is recommended to prepare your own food if necessary.
Q. Where do the One-Day Technical Tours depart from and return to?
A. All One-Day Technical Tours depart and return to ICC Kyoto, the main conference venue.
Post Congress Tour
Q. What is the Post Congress Tour?
A. Post Congress Tour are multiday tours offered after the IHC2026 conference.
Q. When does the Post Congress Tour take place?
A. From Saturday, August 29 2026 - Monday, August 31 2026.
Q. How can I apply for the Post Congress Tour?
A. Please visit TOURS for updates.
Q. Are post congress Tour fee included in the congress registration fee?
A. No. Participation in the Post Congress Tour requires additional fee.
Q. How much is the Post Congress Tour?
A. JPY 120,000 for each tour per person.
Q. What kind of Post Congress Tours are planned?
A. Participants can choose from 4 different types of tours planned visiting various parts of Japan.
Please visit TOURS for a detailed itinerary.
Q. Will I be able to schedule my flight back home for the last day of the congress tour?
A. Not recommended. Unpredictable road traffic conditions may affect the tour schedule and delay the arrival at the station.
For this reason, we strongly recommend that participants do the following:
・Make their own accommodation arrangements for the night of Monday, August 31, 2026.
・Schedule their return travel on or after Tuesday, September 1, 2026.
Q. Is accommodation on August 31 (the last day of the Post Congress Tour) included in the tour?
A. No. Accommodation on Monday, August 31, 2026 is not included. Participants are requested to arrange their own accommodation for that night.
Tours for Accompanying Persons
Q. What are Tours for Accompanying Persons?
A. A half-day Kyoto city tours for accompanying persons during the conference period. These tours are open not only to accompanying persons but also to all conference attendees.
Please visit TOURS for details and updates.
Q. How much are the Tours for Accompanying Persons?
A. Please visit TOURS for details and updates.
Q. How can I apply for Tours for Accompanying Persons?
A. Please visit TOURS for details and updates.
Q. Are the Tours for Accompanying Persons included in the Accompanying Persons registration fee?
A. No. Participation in the tours requires additional fee, which is not included in the accompanying person registration fee.
Q. How can I reserve the one-day technical tour and the post-congress tour?
A. Register from here.
This is a separate system from Confit, please create a new account from this registration system.
Q. Are the tours included in the registration fee?
A. No. The tours are not included. A separate fee is required in addition to the registering fee.
Q. I want details of the tours planned.
A. Please visit TOURS for details.
Q. What kind of tours are planned?
A. The following tour options are planned (please visit each link for details)
・One-Day Technical Tour
・Post Congress Tour
・Tours for Accompanying Persons
*Please note that a special scientific event is scheduled on the same day as the one-day tour. Participants are advisee to consider this when planning the schedule. Visit TOURS for details.
One-Day Technical Tour
Q. What is the One-Day Technical Tour?
A. It is a day trip scheduled on August 28, 2026, visiting facilities in prefectures neighboring to Kyoto Prefecture, the venue location.
Q. When does the One-Day Technical Tour take place?
A. August 28, 2026
Q. How much is the tour?
A. JPY 25,000 for each tour per person.
Q. How many tour options are there?
A. There are five tour courses, T1-T5.
Visit TOURS for detailed tour itinerary.
Q. Can I attend the Special Scientific Event and the One-Day Technical Tour on the same day?
A. No. The Special Scientific Event and the One-Day Technical Tour are scheduled for the same fay. You cannot attend both.
Q. Can dietary restrictions be accommodated during the tour lunches?
A. No. We will not be able to accommodate dietary restrictions (vegetarian, halal, etc.), during lunch on the tours. It is recommended to prepare your own food if necessary.
Q. Where do the One-Day Technical Tours depart from and return to?
A. All One-Day Technical Tours depart and return to ICC Kyoto, the main conference venue.
Post Congress Tour
Q. What is the Post Congress Tour?
A. Post Congress Tour are multiday tours offered after the IHC2026 conference.
Q. When does the Post Congress Tour take place?
A. From Saturday, August 29 2026 - Monday, August 31 2026.
Q. How can I apply for the Post Congress Tour?
A. Please visit TOURS for updates.
Q. Are post congress Tour fee included in the congress registration fee?
A. No. Participation in the Post Congress Tour requires additional fee.
Q. How much is the Post Congress Tour?
A. JPY 120,000 for each tour per person.
Q. What kind of Post Congress Tours are planned?
A. Participants can choose from 4 different types of tours planned visiting various parts of Japan.
Please visit TOURS for a detailed itinerary.
Q. Will I be able to schedule my flight back home for the last day of the congress tour?
A. Not recommended. Unpredictable road traffic conditions may affect the tour schedule and delay the arrival at the station.
For this reason, we strongly recommend that participants do the following:
・Make their own accommodation arrangements for the night of Monday, August 31, 2026.
・Schedule their return travel on or after Tuesday, September 1, 2026.
Q. Is accommodation on August 31 (the last day of the Post Congress Tour) included in the tour?
A. No. Accommodation on Monday, August 31, 2026 is not included. Participants are requested to arrange their own accommodation for that night.
Tours for Accompanying Persons
Q. What are Tours for Accompanying Persons?
A. A half-day Kyoto city tours for accompanying persons during the conference period. These tours are open not only to accompanying persons but also to all conference attendees.
Please visit TOURS for details and updates.
Q. How much are the Tours for Accompanying Persons?
A. Please visit TOURS for details and updates.
Q. How can I apply for Tours for Accompanying Persons?
A. Please visit TOURS for details and updates.
Q. Are the Tours for Accompanying Persons included in the Accompanying Persons registration fee?
A. No. Participation in the tours requires additional fee, which is not included in the accompanying person registration fee.
Gala Dinner
For gala-related inquiries, please contact here.
Please note that a completed participant registration on Confit is required before registering for the Gala Dinner.
Q. I would like to know more details about the Gala Dinner.
A. Visit Gala Dinner for details.
Q. When will the Gala Dinner take place.
A. Wednesday, August 26th 2026.
Q. Where do I register for the Gala Dinner?
A. Registration can be made from here.
This is a separate registration system. A new user account is required.
Q. Is the Gala Dinner included in the registration fee?
A. No, the Gala Dinner is not included. A separate fee is required in addition to the registering fee.
Q. How much is the Gala Dinner?
A. JPY 18,000 per person
Q. Can I bring accompany persons to the Gala Dinner?
A. Yes. Accompanied guests are welcome to the Gala Dinner. Participation fee is the same rate: JPY 18,000 per person.
Q. Can I bring my children to the Gala Dinner?
A. Yes. However, there is no discounted fee for children. The participation fee is the same as the adult rate: JPY 18,000 per person.
Please note that drinking alcohol is prohibited for individuals under 20 years of age in Japan.
Q. Is Confit registration required for accompanied persons attending the Gala Dinner only?
A. No. Registration on Confit is not required for accompanied guests who are only attending the Gala Dinner.
Participation fee is the same rate: JPY 18,000 per person.
Q. Are dietary restrictions accommodated?
A. Yes. We can provide:
・ Halal-friendly
・ Gluten-free
・ Allergen-conscious meals
*Please indicate your dietary requirements at the time of registration.
Q. Will there be alcohol served at the Gala Dinner?
A. Yes. Alcohol will be served at the Gala Dinner. Please note that drinking alcohol is prohibited for individuals under 20 years of age in Japan.
Q. For any questions, please contact the following e-mail address.
inq_ihc2026_social_events@web-register.jp
For gala-related inquiries, please contact here.
Please note that a completed participant registration on Confit is required before registering for the Gala Dinner.
Q. I would like to know more details about the Gala Dinner.
A. Visit Gala Dinner for details.
Q. When will the Gala Dinner take place.
A. Wednesday, August 26th 2026.
Q. Where do I register for the Gala Dinner?
A. Registration can be made from here.
This is a separate registration system. A new user account is required.
Q. Is the Gala Dinner included in the registration fee?
A. No, the Gala Dinner is not included. A separate fee is required in addition to the registering fee.
Q. How much is the Gala Dinner?
A. JPY 18,000 per person
Q. Can I bring accompany persons to the Gala Dinner?
A. Yes. Accompanied guests are welcome to the Gala Dinner. Participation fee is the same rate: JPY 18,000 per person.
Q. Can I bring my children to the Gala Dinner?
A. Yes. However, there is no discounted fee for children. The participation fee is the same as the adult rate: JPY 18,000 per person.
Please note that drinking alcohol is prohibited for individuals under 20 years of age in Japan.
Q. Is Confit registration required for accompanied persons attending the Gala Dinner only?
A. No. Registration on Confit is not required for accompanied guests who are only attending the Gala Dinner.
Participation fee is the same rate: JPY 18,000 per person.
Q. Are dietary restrictions accommodated?
A. Yes. We can provide:
・ Halal-friendly
・ Gluten-free
・ Allergen-conscious meals
*Please indicate your dietary requirements at the time of registration.
Q. Will there be alcohol served at the Gala Dinner?
A. Yes. Alcohol will be served at the Gala Dinner. Please note that drinking alcohol is prohibited for individuals under 20 years of age in Japan.
Q. For any questions, please contact the following e-mail address.
inq_ihc2026_social_events@web-register.jp
Call for Sponsors
Q. What kinds of sponsorship opportunities are available for IHC 2026?
A. 7 types of sponsorship are available for IHC2026:
1. Package sponsor
2. Exhibition booth
3. Advertisement
4. Sponsored Seminar
5. Coffee Break Sponsorship
6. Gala Dinner Sponsorship
7. Symposium Sponsor
For details about each sponsorship opportunity, please refer to the prospectus links listed under the question “Where can I find the prospectus?” below.
Q. Where can I find the prospectus?
A. Please find the prospectus from the link below:
1. Package sponsor (English page8 / Japanese 8ページ)
2. Exhibition booth (English page9 / Japanese 9ページ)
3. Advertisement (English page11 / Japanese 11ページ)
4. Sponsored Seminar (English page15 / Japanese 14ページ )
5. Coffee Break Sponsorship (English page16 / Japanese 16ページ)
6. Gala Dinner Sponsorship (English page16/ Japanese 16ページ)
7. Symposium Sponsor (English / Japanese)
Q. How can I apply to become a sponsor for IHC 2026?
A. Please apply for sponsorship using the application form below:
Package Sponsor
Exhibition, Advertisement, Sponsored Seminar, Coffee Break Sponsorship, Gala Dinner Sponsorship
Symposium Sponsors
Q. When is the sponsorship application deadline?
A. The application deadlines for each sponsorship are as follows:
April 30th, 2026 Package sponsor
Exhibition booth
Sponsored Seminar
Coffee Break Sponsorship
Gala Dinner Sponsorship
Symposium sponsor
May 29th, 2026 Advertisement
・Program Booklet
・Smartphone Application
・Congress Bag
June 30th, 2026 Advertisement
・Promotional Banner on Website at Sponsor Page
・Flyer inserted in the congress kit
・Name Card Case Strap
・Main Entrance Banner
Q. What is a Symposium Sponsor?
A. The congress will feature 27 symposiums, and sponsorship opportunities for each symposium are also available.
For more information, visit CALL for SYMPOSIUM SPONSORS.
Q. What kinds of sponsorship opportunities are available for IHC 2026?
A. 7 types of sponsorship are available for IHC2026:
1. Package sponsor
2. Exhibition booth
3. Advertisement
4. Sponsored Seminar
5. Coffee Break Sponsorship
6. Gala Dinner Sponsorship
7. Symposium Sponsor
For details about each sponsorship opportunity, please refer to the prospectus links listed under the question “Where can I find the prospectus?” below.
Q. Where can I find the prospectus?
A. Please find the prospectus from the link below:
1. Package sponsor (English page8 / Japanese 8ページ)
2. Exhibition booth (English page9 / Japanese 9ページ)
3. Advertisement (English page11 / Japanese 11ページ)
4. Sponsored Seminar (English page15 / Japanese 14ページ )
5. Coffee Break Sponsorship (English page16 / Japanese 16ページ)
6. Gala Dinner Sponsorship (English page16/ Japanese 16ページ)
7. Symposium Sponsor (English / Japanese)
Q. How can I apply to become a sponsor for IHC 2026?
A. Please apply for sponsorship using the application form below:
Package Sponsor
Exhibition, Advertisement, Sponsored Seminar, Coffee Break Sponsorship, Gala Dinner Sponsorship
Symposium Sponsors
Q. When is the sponsorship application deadline?
A. The application deadlines for each sponsorship are as follows:
April 30th, 2026 Package sponsor
Exhibition booth
Sponsored Seminar
Coffee Break Sponsorship
Gala Dinner Sponsorship
Symposium sponsor
May 29th, 2026 Advertisement
・Program Booklet
・Smartphone Application
・Congress Bag
June 30th, 2026 Advertisement
・Promotional Banner on Website at Sponsor Page
・Flyer inserted in the congress kit
・Name Card Case Strap
・Main Entrance Banner
Q. What is a Symposium Sponsor?
A. The congress will feature 27 symposiums, and sponsorship opportunities for each symposium are also available.
For more information, visit CALL for SYMPOSIUM SPONSORS.