plum tree

Question

I have a gel on my plums. I spray it but it keeps coming back.

Answer 1

Your plum tree might have gummosis, a condition with a few possible causes. Here's how to recognize it and what to do:

https://www.gardeningknowhow.com/edible/fruits/fegen/what-is-gummosis.htm
http://utahpests.usu.edu/IPM/htm/fruits/fruit-insect-disease/gummosis/
https://hortnews.extension.iastate.edu/2011/7-13/gummosis.html