Oh No! My Mango Tree!
I hope you all can help me with something that has me concerned. I have attached some photos to help explain. I have a Cogshall mango in my backyard, (Plantation, Broward County). It's been in the ground for almost three years. Overall, it seems healthy and had a number of growth flushes last summer. Probably doubled in size since I planted it. No fruit yet.
About three weeks ago I noticed a few leaves turned dull, almost a greyish brown color, then dried up and fell off the tree. But after those first few leaves fell off, all seemed well. Yesterday I noticed about another half dozen leaves beginning to exhibit the same symptoms. They're beginning to look dull and brownish. This morning, even more.
For the most part, I leave the tree alone. I water it only during the dry season, and even then maybe once every two weeks. I think I've fertilized it twice since planted. I have sprayed it with copper sulfate a few times because there is some fungus on the leaves.
Any ideas what is going on? Thank you.