Blog Archives

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

The Dark Side of Black Root Rot in Ornamentals

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 hollies, inkberry, pansy, petunia, and vinca. Black Root Rot Facts Symptoms are

Posted in Landscape Trees & Shrubs, 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

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

How Poinsettia Diseases Can Ruin the Holiday

Poinsettia are holiday decorations in public and personal spaces. No holiday décor is complete without at least one. However, numerous plant diseases can act as a Grinch to steal holiday cheer. Proper plant selection and maintenance are important for a

Posted in Ornamentals

“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 with water, which ultimately causes roots to suffocate. Once root damage occurs, plants decline and

Posted in Landscape Trees & Shrubs, Ornamentals

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