Scale appears as shell-like bumps on the stems and undersides of leaves. Get rid of them with our plant-friendly homemade scale removal recipe Scale looks like shell-like bums on the stems and undersides of leaves. Heavy infestations can result in poor plant growth. Some species of scales produce a sticky liquid called honeydew that is deposited on the foliage. Under damp conditions this honeydew can become infested with fungus know as sooty mold. Some species of ants collect the honeydew…