Whiteflies are tiny, flying insects that feed off plants. If your plant looks unhealthy or is yellow this may be the reason, whiteflies. If you do not rid the plant of this insect the plant will be more prone to any plant disease and eventually die. Whiteflies eat strawberries, cotton plants, vegetable plants and many houseplants. The whitefly actually sucks out plant juices and sap from a plant which will slowly kill the plant. Even worse,...