I had a plum tree fall down last year now there's some suckers coming up around the stump. If I let one grow will it fruit.
Saw this. Seems to indicate that the suckers come from below where the stem is grafted to the root stock and thus would not produce the same fruit that you were getting from the original tree. That’s what I got out of it at least. Maybe Firewood Bandit might have more insight. Will peach tree suckers produce peaches? - HelpfulGardener.com
I transplanted wild plum suckers from my grandparents farm. Planted in the 1870's as grafted hybrids, they reverted to their wild roots over the last 100 years. They produced great (though it took a few years, they were not big suckers/saplings). And it was smaller wild plums but on the rare springs we did not have a heavy wet snow that knocked the blossoms off or a thunderstorm/wind that also ruined the blossoms they were bountiful and we made plum jam. What wonderful memories, I really miss those trees (we sold that house ). And the blooms smell magical!!!
I have some wild plums in my woods and wildwest , you are correct about the great fragrance the blossoms have. It is a nice treat when I can find the ripe plums before the critters find them. Never enough to make any jam.
Without knowing more about the original tree I can't answer. You are correct if it was a grafted tree it is going to resort to whatever the rootstock is.
If it is supposed to be a "dwarf", then most likely it is a grafted tree and the root suckers will not be productive or like the original.
