Almost any crab dropping fruit right now is working. We have had cold and snow. Temps down to -28 at daybreak.
Dolgo seedlings seem to be winners. Somehow I lost a picture of another dolgo seedling that someone on here helped me name Clown’s Nose. It is still dropping fruit and attracting deer. Several dolgo seedlings are done dropping. I have two purchased ( grafted) dolgo trees from nurseries. One is dropping some fruit and the older tree is pretty much done.
Noran, Courthouse Crab, and another Buckman Crab are young trees that are holding just a bit of fruit.
I suspect more like 20 years. He sold bunches red and bunches yellow at the time. Some were not hardy for me. They were seedlings with fruit up to about 3/4 inch in size.