The ISHS is registered in Belgium as an International Organization in accordance with the law of October 25, 1919
A copy of the latest update of the ISHS statutes (published March 2019) is available for download here.
The seat of the Society is: Avenue de Tervuren 36/18, 1040 Brussels.
See http://www.ishs.org/contact if you wish to get in touch with ISHS headquarters.
The International Society for Horticultural Science is an entirely independent not-for-profit organization which is fully self-supporting. Funding of its operations is primarily through contributions from membership dues and sales of scientific publications.
A translation of the year 2018 version of the statutes is provided for reference below.