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 ...

Purdue Landscape Report: Christmas tree growers have been struggling with an invasive scale pest called Cryptomeria scale (Aspidiotus cryptomeriae), which is a serious pest of conifers. The scales ...

Maple trees in urban environments show signs of stress due to the urban heat island effect. Impervious surfaces like pavement retain heat and disrupt water absorption, stressing trees and making them ...

A: From the photos, I can see that the leaves on the peaches are a bit tattered, but it’s those “black things” that look like large drips of black coffee that have me most concerned for the health of ...

The blackish trunks on the crapemyrtles around town are caused by an insect known as crapemyrtle bark scale. It doesn’t kill the trees, but it does make them unsightly and less vigorous. This scale is ...

A scale insect infestation is a sign that a tree is in poor health, making it susceptible to the tiny insects. Pixabay photo Scale insects are sneaky little devils that often go unnoticed by gardeners ...