Gardeners and Landscapers I need help. My Magnolia has scale I believe. It is in the ladybug hard shell form with white "mold" on it right now. Last time I had a horticultural spray that was petroleum based. I do not have that I have a Neem Oil based insecticide right now. I can not tell if the Neem is for the crawler stage or if it will work now. However I do not know if I do not know if I will have time to get to the petroleum based before vacation and I am not sure if I should let it go a week and a half as it seems like there is a lot. Anyone know if this will work or if I need to make time to get the petroleum based horticultural oil.

From my experience the neem will work on about any bug at any stage. I've used it to run off Japanese beetles and kill aphids. It has also cleared up rust, powdery mildew, and black spot.