Recka Morris, who writes for Carolina Gardener magazine and lives near Clemson, SC, has extoled the virtues of neem oil. I also have a local NC Piedmont friend who uses it. I plan to try it this year.

I've used it on a variety of indoor and outdoor plants, especially to control aphids and spider mites. Seems to work pretty well.

DH brought in a plant over winter and placed it next to 200 seedlings indoors. Thats how I think we got aphids on the seedlings. Did lots of searching and tried Neem oil. It worked well but I did have to apply it weekly.

I also used it on my roses, azaleas and some other shrubs that tend to get black spot. So far so good. I'm shocked how green everything is.

I've successfully used it to control aphids, and others. It also seems to repel squirrels,and birds, from eating my tomatoes, I assume from smell and/or bitter taste. Cukes don't like it. And does need to be used regularly....