Hello! We have a number of mature orange trees in the ground here in Spain, and some of them this year have fruited beautifully. However, others are small with lots of curled foliage on and haven't fruited at all. The foliage seems to be growing very densely on the inside of the brances so the trees are quite congested. Is this related? Should I be feeding, and if so, what? And how should I prune? I can send some pictures if that helps? Thanks in anticipation! Lu (in Spain)
Thanks I have attached three photos - hope they're illuminating! I can post more if you think that would be helpful! Thanks so much Lu
Looks like leaf miner damage to me. They prefer new growth so you can spray new leaves with something like spinosad.