I've discovered a site that lists sources for bulbs, plants and seeds. The homepage says the sources are worldwide, but all the plants I've checked have been available only from Europe. The site is constantly updated, though, so that could change. Perhaps no North American nurseries have sent their lists in. As of today: Suppliers: 915 Number of plants: 79'557 http://www.plantnavigator.ch/en/index0.shtml Diane Whitehead