first crop of wild plums growing on this draft, it's a four year american wild plum old graft onto chokecherry

first crop of wild plums growing on this draft, it's a four year american wild plum old graft onto chokecherry. it's flowered the last two years, but needed a second genetically distinct branch added for pollination. Prunus americana is reasonably graft compatible with chokecherry, not every graft I've survived this long but success seems more related specifics about the tree like how hard it was pruned, did the growth harden off at the end of the first season. after the second year survival has been very high. here at least I'll get some plums to grow in the nursery, usually I have to travel to collect them.