Currently a large collection remains with the specialists and marketing rests on the idea that the hibiscus is a plant for life. A successfull idea to explain the durability of hibiscus rosa-sinensis. In France, the hibiscus developed in the 70's and you can find traces of collections by perusing the pages of this site Currently varietal search is intensified by several private initiatives and it is plausible to admit that with the millenium new resources will exist. The multiplication and the diffusion of the exotic cultivars in collections remains very limited. In Germany, while production has made great strides, the varietal research workseems to remain very localized and has not spread much.
Some sources do make it possible to find exotic cultivars for collection.
In Spain, production is increasing rapidly and has truly made great strides. Seemingly the producers are satisfied with the European resources. In Italy, two types of production are developing in parallel, a culture in pot with the European resources and another type of production intended for the garden where several exotic cultivars of Australian and American origins are propagated by way of grafting. The other European sources are not known or have not been checked out. Readers who would have information on this subject will be welcome to share the sources of information.