I have had my lemon tree for about a year. It was outside last summer, came in for the winter and is once again outside. It looks happy outside as I am getting new shoots and buds. BUT the underside of the leaves has brown specs that look like eggs. They are everywhere, including the stalk/stem of the plant. I went to a local nursery and they prescribed insect soap. Three doses later, I still have the brown spots on the underside.