Ask-a-Dave's-Gardener: help with Avocado tree, 3 by impynic

impynic wrote:
I planted a Bacon Avocado tree last May, and during the summer I thought the leaves might have gotten fried from the heat here because they turned brown around the edges. I was hoping the problem would resolve itself after it cooled down, but more leaves have turned brown and gotten spots on them- just wondering if there is something else going on. We've had a mild winter here, and the tree has gotten protection when it did get cold. I found something about Persea Mites, but I don't see any webbing on the underside of the leaves. Any help would be greatly appreciated!

Nic