Aphids are tiny insects that suck the sap from a houseplant's leaves. Neem oil and diatomaceous earth are the best organic solutions to use to rid plants of aphids. Keeping a plant healthy and ...

Of the 5000 species of aphids in the world, about 1350 appear in the U.S. They average about 1/8 inch long and can be a number of colors, including green, brown, red, white, and even multicolored.