Help needed with Mango tree disease
IÃ¢ÂÂm a new gardener in Ft. Lauderdale, FL (zone 10b), and am not having any luck with my Mango tree. I bought it from a nursery five months ago and was told to hold off giving it fertilizer till the spring. However, this week I took a close look at the leaves and they seem to have some type of bug eating them. WeÃ¢ÂÂre having a Rugose spiraling whitefly problem and itÃ¢ÂÂs really beating up my banana trees, but the Mango tree leaves have strange spots on the top and blisters on the bottom (See pics), which donÃ¢ÂÂt look anything like the white fly problems on the banana leaves.
Can anyone tell me what kind of bug/disease is on the leaves?
I've sprayed the leaves with Neem once, which didn't do anything, but I've read that I should spray every 7-10 days for it to be effective. Is it safe?
Also, is there a webpage for tropical fruit diseases for newbies anywhere?