1/10–1/16" long, milk-white color. When disturbed, the flies flutter about like tiny snowflakes. On houseplants, greenhouse plants, fruits and vegetables, they cause leaves to yellow and dry. Black sooty mold grows on honeydew secretions of whiteflies. Leaves drop early.
Horticultural oil or insecticidal soap provide excellent control, even of the sweet potato whitefly strain. We recommend Oil-Away™ Supreme Insecticidal Oil or Plant Guardian Houseplant Insecticidal Soap. Pot Stickers also provide some control.