Blog Archives

Landscape Sanitation: Clean Up for Clean Plants

Autumn has arrived in Kentucky and, as leaves change color and fall from trees, it is time to focus on landscape sanitation. Good sanitation practices can help reduce disease-causing pathogens.  These organisms can survive for months or years on dead

Posted in Landscape Trees & Shrubs, Landscapes, Ornamentals

Soil-borne Pathogens Serve as the Biggest Threat to Mum Production in Kentucky

Many Kentucky vegetable and greenhouse producers are beginning to include fall chrysanthemum production in their operations.  Mums are usually planted in June and sold in September when fall color is in demand.  In Kentucky, mum production can vary in size,

Posted in Ornamentals

Houseplant Insect and Mite Control

Many houseplants enjoy time outdoors during summer. However, it’s a tough world out there and more than a few plants develop insect or mite infestations while they are basking in the summer sun. A few weeks indoors can allow pests

Posted in Ornamentals

Spider Mite Problems

The two-spotted spider mite is the most common and destructive mite on deciduous ornamentals. It feeds on many varieties of trees, shrubs, flowers, weeds, fruits, and garden crops. Immature stages and adults are yellow to green with two dark spots

Posted in Landscape Trees & Shrubs, Ornamentals

Alternatives for Japanese beetle control

Japanese beetle numbers appear to be up in many areas, and landscapes with plants these insects prefer could be under siege for the next 2 to 3 weeks. Turf and ornamental insecticides containing pyrethroids (bifenthrin, cyfluthrin, cypermethrin, permethrin, etc.) can

Posted in Landscape Trees & Shrubs, Ornamentals

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

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