Rebecca Norman wrote:Note: this question is about Asimina triloba, a deciduous tree native to North America, not about papayas, a tropical tree. Australians and some other countries call papayas pawpaw, and if it's not clarified right off the bat, they might derail and confuse your question.
I'm sorry, I don't know of any pawpaw suppliers in Europe. I saw a really good "edible landscaping" seed and plant source website based in the UK, but I forget the name. Pawpaw seeds have to kept moist and cool over the winter, and then take a very long time to germinate the following spring and summer, so they are little trickier than most to grow from seed.