Yellow/brown spots on dwarf Myer lemon tree
(San Diego, CA)
Help! I discovered yellow/orangish spots on my dwarf Myer Lemon tree on the top of the leaves and branches. Could you please identify the disease/insect/fungus and help me get rid of the problem? I hope it's not citrus canker and that I don't have to get rid of the tree. Also, how can I prevent this in the future? I do have a lot of snails and aphids that go to it a lot. I try to use natural insecticides so I made a garlic/onion spray and occasionally spray it on.
Thank you for your help.