hello, My meyer lemon tree seems to have a serious problem. I found strange stains in its leaves. Is it infected or nutritious problem related? Please help!!
Meyer Lemon Tree Leaf Stains
Certified GKH Gardening Expert
The three things I am going to recommend are things that should be done annually. Apply dolomitic lime, iron sulfate, and a citrus fertilizer once per year, at least.
This seems like a fungal infection. The sulfur in iron sulfate will kill the fungus, while the iron will go to the fruiting process, while the dolomitic lime provides calcium, magnesium, and carbon.
It will also regulate the pH of the soil so that it is not desirable for pests, but perfect for plants, all while resolving the issue at hand.