My lemon tree get yellow tips on their leaves. what is the cause of this. the tree is more than 15 years old . I noticed also that less foliage. and less flower. I bought Fish fertilizer when i noticed this problem and giving this fertilizer. attached are the photos. Please advise sally M.
Your lemon tree could be getting too much water or could have a disease that's causing the leaves to yellow. These articles may help you: