If a grapefruit tree leaves are crinkled what could be the problem and what would be the best thing to put on it?

Answer:

Answer

there could be many reasons: mites, aphids, tunnel moth, nutrition deficiency ect...
can you give more details?

First answer by Zaf. Last edit by Zaf. Contributor trust: 1093 [recommend contributor recommended]. Question popularity: 9 [recommend question].