Marks on Olive Leaves
Hi there. I tried posting this to the Tree Forum, but in the end they recommended that I try the Houseplant section instead. I purchased an olive tree (Olea europaea) from a local nursery a few weeks ago, and it is doing magnificently. But I have noticed that one or two of the leaves have these sort of tiny indentations, or pits, about half the size of a pinhead on their undersides. They are very tiny, and barely noticeable; I'm not sure if they would even show up on a photo. The pits themselves are the same color as the undersides of the leaf. When I shine a flashlight through the back of these leaves, I see a lot of tiny black or brown dots, presumably where the indentations are. It should be noted that I just removed a scale insect from one of the branches, but I'm not sure if these are just wounds from that, or a fungal attack. The humidity in here is very low, and I only water when the soil is nearly dry. The tree also receives adequate air circulation, and the lowest temps in my apartment right now are about 70 degrees. I am unable to post any pictures, as I do not own a camera at this time, but any help would be appreciated. Thank you.