Q.Meyer Lemon Tree Problems
after all the fires in california, my usually very productive meyer lemon tree stopped putting out flowers and producing lemons. the leaves turned yellow. i have a plum tree that is nearby that has leaves curling and looks like an aphid problem or fungus. could this aphid/fungus problem be the problem with my lemons. I’m uploading a picture of the lemons which have black steaks on the outside although they still edible.
Certified GKH Gardening Expert
Here are some possibilities for the damage:
And yes, diseases and insects can invade nearby trees.