they're also available at a local walmart as rootstock. I bought one. If i find a nursery that has it i will buy more, but i like growing "weird" plants that no one has heard of, like soapberries, kumquats, that sort of thing.
those grow wild all over the land here, i just found out what they were called last year; although i had heard they're not edible but to leave them for birds. I'll ask the Ag Center if they're safe to eat.
Please do ask your AG center, but they’ll tell you they’re safe to eat. I make a jam of sorts with the berries. They’re not real sweet but are totally edible