Hi!

I have a young (4 months old) mango tree. I noticed today that there are little brown spots on two of its leaves. The spots are on the back of the leaf which look like red dots on the front side of the leaf.

What causes this and what can I do to keep my mango tree healthy and alive?

Here are some photos of the front side of the leaf:

These are photos of the back side of the leaf:

Can you please help me save this tree?