Re: Meyers Lemon Tree as an indoor plant about 4 feet high. Its placement is in a southfacing sun room. I live in Western Massachusetts and this summer has been hot and humid. Several months ago I had mealy bugs on my Meyers Lemon Tree and thanks to your site I was able to get rid of them. However, they are returning. I sprayed again but the entire plant looks sickly. The leaves are yellow and falling off the tree. Should I fertilize the plant as well as spray again? Thank you. MaryAnna