Scales are sap-sucking pests that attach themselves to the twigs, leaves, branches, and fruits of host plants. Learn the least-toxic methods of scale control here.
Common on backyard trees, ornamental shrubs, greenhouse plants, and houseplants. They are such oddly shaped and immobile pests that they often resemble shell-like bumps rather than insects. In many cases, heavy infestations build up unnoticed before plants begin to show damage. Large populations may result in poor growth, reduced vigor and chlorotic (yellowed) leaves. If left unchecked, an infected host may become so weak that it dies.