The Leibniz Institute for Horticultural Sciences (IGZ) has the legal form of a registered association. As such it has an IGZ Executive Board and a General Assembly. The Executive Board manages the current business of the institute and is composed of the Scientific Director and the Administrative Director. The General Assembly of the IGZ determines the principles of the association’s activities and supervises the Board. It consists of representatives of the Federal Government, the State of Brandenburg, various research institutions, scientific societies and horticultural associations.
The Science Advisory Board advises the IGZ Executive Board and the General Assembly of the Institute in all important questions of its research work. It is composed of representatives of international university and non-university research institutions.

The research work of the IGZ takes place in Subject areas (departments) and Research groups (working groups).
Other important functions to protect the rights of all employees are the works council and the equal opportunities officer.