Blog Archives

Avoid Introduction of Boxwood Blight into Landscapes

Boxwood blight has been detected in Kentucky again this year. The disease can be devastating to American boxwood cultivars, which are common in the Kentucky landscape. Complete defoliation can occur within a week and plants can die within a single

Posted in Landscape Trees & Shrubs

Dogwood Sawflies

As with many plant-feeding insects, the dogwood sawfly is one of those pests that rarely draws much attention but occasionally can be very destructive. A report of damage early this week provides a good opportunity to review this interesting and

Posted in Landscape Trees & Shrubs

Japanese Beetle Activity Continues

Japanese beetles (Figure 1) have made a comeback so far this year with significant problems in some areas of the state. Reports from Ohio also indicate above-normal numbers. Management Options Hand Removal Removing beetles by hand may provide adequate protection

Posted in Landscape Trees & Shrubs

New County Reports of Emerald Ash Borer

Since its discovery in 2009, emerald ash borer (EAB) has continued to invade Kentucky (Figure 1); Cumberland, Green, Taylor, and Wayne counties have been added to the list of counties this year. Designation as “infested” does not mean the insect

Posted in Forest Trees, Landscape Trees & Shrubs

Japanese Beetles Abundant in Some Areas

Japanese beetles are emerging, and there are early indications that populations are well above normal in some areas. Upcoming rain will soften the soil and spur more emergence. When practical, hand removal is an effective way to control this insect

Posted in Landscape Trees & Shrubs, Landscapes

Time to Check for Bagworms

Small bagworms are feeding now. It takes careful inspection to detect small larvae wrapped in silk bags with pieces of leaf attached (Figure 1). Check small trees and shrubs that have a history of problems to see if the insects

Posted in Landscape Trees & Shrubs

Leaf Skeletonizers on Oaks

Leaf skeletonizers are pale yellow-green caterpillars that create veiny skeletons as they feed on upper leaf surfaces (Figure 1). There are several leaf skeletonizer species that feed on different tree species, but their activity is rarely noticed. Usually, weather or

Posted in Landscape Trees & Shrubs