Blog Archives

A Great Spring for Aphids

This long spring is ideal for aphids. Colonies of the small sap-feeders (Figure 1) can be found on many landscape plants now. Impacts of aphids vary widely. Some species manage to remove sap without any obvious effect on plants. However,

Posted in Landscape Trees & Shrubs, Ornamentals

Dogwood Anthracnose Spotted

Anthracnose of dogwood is a common problem in Kentucky. Symptoms on landscape and forest dogwoods often first appear during wet periods in late spring. If left unmanaged, the pathogen spreads, eventually resulting in plant death.  Selection of resistant varieties and

Posted in Forest Trees, Landscape Trees & Shrubs

“Wet Feet” of Ornamentals

“Wet feet” is the common term for a condition that affects plant species intolerant of wet growing conditions. This problem occurs when soils become saturated in water, which ultimately causes roots to suffocate. Once root damage occurs, plants decline and

Posted in Landscape Trees & Shrubs

Eastern Tent Caterpillar Egg Hatch Begins

Larry Hanks, a certified arborist in central Kentucky, reported seeing newly hatched eastern tent caterpillars in Scott County on March 25. This is 7 to 10 days later than the typical mid-March date. Soon after hatch, the tiny caterpillars feed

Posted in Landscape Trees & Shrubs

Rainy Season Equals Phytophthora Disease

Spring rains can create growing conditions that are devastating to most landscape plants.  Wet soils are favored by a group of pathogens called water molds, or oomycetes, which cause a range of root and stem diseases. Water molds are found in

Posted in Landscape Trees & Shrubs, Ornamentals

Emerald Ash Borers 2018

Since the first discoveries of emerald ash borer in Boone, Jessamine, and Shelby counties in 2009, this invasive insect has spread through normal dispersal flights and the inadvertent movement of infested wood. Tunneling beneath the bark by the larvae (Figure

Posted in Forest Trees, Landscape Trees & Shrubs

Time for Eastern Tent Caterpillar Egg Hatch

After spending about 9 months as eggs in masses on twigs of wild cherry and related trees, the first few tiny eastern tent caterpillars (ETC) of the season should soon be leaving their eggs. The onset of the single generation

Posted in Forest Trees, Landscape Trees & Shrubs