Contact

Internationale Stauden-Union
International Hardy Plant Union
Union Internationale des Producteurs
de Plantes Vivaces
c/o ANTHOS
P.O. Box 170
NL-2180 AD Hillegom
Netherlands
Phone ++31 (0)252 53 50 80
Fax ++31 (0)252 53 50 88
isu@isu-perennials.org

Please contact us by mail if you have any suggestions or questions.