Welcome
The International Hardy Plant Union (ISU) is an organisation of about 500 perennial plant and tree nurseries, institutions and persons with a professional interest in perennials from 17 European countries, the USA, Canada and Argentina. On the ISU website you may inform yourselves about the aims and activities of the ISU. We thank you for the visit to the websites of the ISU and are looking forward to echoes of any kind.
INTERNATIONAL HARDY PLANT UNION (ISU)
Internationale Stauden-Union
International Hardy Plant Union
Union Internationale des Producteurs de Plantes Vivaces
NL-2180 AD Hillegom - isu@isu-perennials.org