Every 2 year, we organise a Congress, now called 'the Summer Days', as a real meeting point for all colleagues. During these days the delegate – meeting takes place.
The aim of this conference is to promote international contacts in the Perennial Plant Industry and to provide an opportunity to exchange knowledge and expertise in an inspiring atmosphere.
The excursions of the ISU have a long tradition. Since its foundation there have been several excursions. They either go to botanically interesting regions and give good inside view of our perennials in the wild.