Whiteflies are a common pest in the garden, but they can also be found in greenhouses and on houseplants. There are a variety of synonyms for whiteflies, including greenhouse whitefly, sweet potato whitefly, silverleaf whitefly, and citrus whitefly. These pests are tiny insects that typically feed on the undersides of leaves. They are named for their white wings, which are powdery in appearance. Whiteflies can cause damage to plants by feeding on their sap and spreading viruses. They are difficult to control and often require the use of insecticides. To prevent whiteflies from infesting your plants, it is important to maintain good plant health and keep your garden clean and free of debris.