Managing a difficult pest on houseplants

A sticky substance on plant leaves, plant stands, and the floor are often the first clue alerting gardeners to a problem. If a closer look reveals bumps on the upper and lower surface of leaves and stems, it means scale insects have moved in to dine on your houseplants. Severe infestations can cause leaf yellowing, stunting and dieback of the plant. If you have battled these insects, you know…