Plum Fruit Has Black Spot
I planted a Burbank Plum tree almost two years ago and it has produced fruit this year. The tiny new fruit has a black spot on the side of the fruit. What is it and how do I treat it?
Certified GKH Gardening Expert
It could be brown rot. These articles may help: https://www.gardeningknowhow.com/edible/fruits/plum/plum-tree-diseases.htm, https://www.gardeningknowhow.com/edible/fruits/peach/brown-rot-fungus.htm