Plum rootstock Stone Fruit compatibility

No, it was one of a large mixed variety that I got from the Missouri Department Conservation. Great prices!

Did you obtain the mixture of wild plums? I see they are now sold out!

I have some shoots that are around 5-6” and I’m wanting to celebrate.
These are
Elephant Heart Japanese Plum
Green Gage (European) plum
Japanese “green gage” style plum
Flavor Supreme Pluot