Weird growths on plum tree
My plum tree which is about 6 or 7 years old has produced very few plums, 4 or 5 a year from maybe slightly more flowers. These weird growths which themselves have leaves growing from them have been present from the first year. I remove them all every year but they always come back. I don’t think it’s black knot and doubt if it’s plum pocket as these growths appear befor the tree produces any flowers or fruit. Would be interested and extremely grateful for any advice and or theories.