University of Maryland Extension

Insects & Pests

Pollinator Friendly Plant Production 2: Controlling Insect Pests

Customers want pollinator friendly plants, but producing an aesthetically pleasing plant typical involves the use of control materials to keep insect damage to a minimum. This fact sheet provides information on methods and materials that will help you reduce pest insect damage in the greenhouse...

Japanese Maple Scale Woody Ornamental Host Plants

Japanese maple scale (JMS), (Lopholeucaspis japonica Cockerell) (Hemiptera: Diaspididae), is a prolific pest of major concern to nursery crop producers and landscape managers in MD and the eastern United States. JMS is difficult to monitor and manage due to its small size, extended crawler...

General Recommendations for Managing Nematodes in Field Crops

Nematodes are an economically important pathogen of many crops in Maryland. Significant yield loss can occur if nematodes are not managed properly. This factsheet serves as a broad introduction to nematodes as plant pathogens and serves as a general guide for sampling and managing nematodes in...

Spotted Lanternfly

The spotted lanternfly ( Lycorma delicatula ) is a new invasive pest insect in the Mid-Atlantic. It has the potential to be an important pest on several important crops. It has been detected in several states that border Maryland, but has not yet been detected in Maryland. This publication...

The Gyspy Moth and the Homeowner (FS-242)

The gypsy moth caterpillar is the most serious threat to forests comprised of oak in the United States. Gypsy moths reach greatest densities where oaks are the most abundant trees. If you have oak trees on your property, gypsy moths pose a threat to the beauty and value of your land.

Reducing Vole Damage to Plants in Landscapes, Orchards and Nurseries (FS-654)

Voles are small mouselike rodents. In Maryland, two species, the meadow vole and the pine vole, eat roots, bark, and bulbs; even at low population levels, they cause significant damage to forest plantations, orchards, nurseries, and landscapes. This fact sheet explains how to identify these...

Japanese Maple Scale: A Pest of Nursery and Landscape Trees and Shrubs (FS-967)

Unless Japanese Maple Scale (JMS) is monitored carefully and controlled early, populations of this armored scale can spread throughout a nursery or landscape to many species of woody plants and build up to levels that cause dieback and even death of infested plants.
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