Blog Archives

Ambrosia Beetles Are Out Looking for New Hosts

Two invasive ambrosia beetle species are serious pests in nursery and landscape trees and shrubs: granulate ambrosia beetle (Figure 1), and black stem borer (Figure 2). Ambrosia beetles are about 2 to 4 mm in length and spend most of

Posted in Landscape Trees & Shrubs, Nursery Crops

Fall-Colored Damage in Bald Cypress (Taxodium distichum) Caused by Rust Mites in Late Spring

Bald cypress, a deciduous conifer, sheds its needle-like leaves in early fall after the foliage turns tan, cinnamon, and deep orange.  We noticed fall-colored needles in bald cypress trees grown in a nursery in western Kentucky last May (Figures 1

Posted in Nursery Crops

The Dark Side of Black Root Rot

Recent rainy weather in Kentucky has favored black root rot disease development. Black root rot can affect a wide range of ornamentals in home and commercial landscapes, nurseries, and greenhouses. Black root rot is commonly observed on Japanese and blue

Posted in Landscape Trees & Shrubs, Nursery Crops, Ornamentals

Preliminary 2016 Report on Ambrosia Beetle in Western Kentucky

Ambrosia Beetle Complex Ambrosia beetles (Coleoptera: Curculionidae: Scolytinae) represent a large number of native and exotic species that live in association with Ambrosia fungi. Ambrosia fungi digest wood and provide nourishment to adult beetles and larvae. The beetles are the

Posted in Nursery Crops