Plum tree doesn’t fruit

Question

I have 2 plum trees that are at least 6 years old that blossoms and loaded with fruit so the tree is all white in the spring and lots of fruit forms until they are about the size of a small marble then they all fall off within days. Any help would greatly appreciated.

Answer 1

There could be several reasons for premature fruit drop. If your temperatures are too cold when the flowers appear, the fruit may fail to develop. Perhaps your trees are not being cross-pollinated by other types of plum trees.

Here's more:
https://www.gardeningknowhow.com/edible/fruits/fegen/reasons-for-small-hard-fruit.htm

https://www.gardeningknowhow.com/edible/fruits/plum/plum-trees-not-fruiting.htm

https://www.gardeningknowhow.com/edible/fruits/fegen/june-drop-information.htm