Scale insects are one of the most common and tenacious pest of ornamental plants. “Scales are tiny insects that appear rounded and flat with a waxy coating, like a little shield,” says Alejandro ...

Garden staff are finding more scale insects and aphids than in past years. A major infestation of lecanium scale was recently found on a large planting of bald cypress at the Garden. The population of ...

SHREVEPORT, La. - Viburnum, a staple in many Louisiana landscapes, has been suffering from a common but alarming affliction. Homeowners may notice a black, waxy buildup covering their plants, sparking ...

Crape myrtles, an ornamental tree popular in landscapes throughout the state of Delaware, are prized for their beauty, exfoliating bark in shades of silver and cinnamon, and long-lasting flowers in a ...

Scale insects can infest and damage many of the plants we grow in our landscapes and indoors. They feed on the sap of plants, and a large enough population can weaken a plant, damage it or even kill ...

correctionIn an earlier version of this article, the last name of a Smithsonian Gardens arborist was incorrectly stated. He is Jacob Hendee, not Jacob Hender. The article has been corrected. The crape ...

We enjoy magnolia trees for their beautiful early spring flowers, but in summer they sometimes get downright ugly. Gardeners may notice a fuzzy black coating on branches or a sticky glaze that ...

A collaborative team of researchers in the Texas A&M College of Agriculture and Life Sciences Department of Horticultural Sciences and the Department of Biology has developed a unique system of ...

Q: This is a picture of our dogwood tree with white growths on it. Your help is appreciated. A: Your dogwood tree has a healthy case of scale insects. Scale insects attach themselves to the host plant ...