The visible invisible: impacts of invasive jumping worms


Contributor: Annise Dobson Many of us have grown up thinking that earthworms are a sign of healthy, fertile soil. However, many earthworms found throughout Maryland are not native. Earthworms can be beneficial in their native ecosystems and agricultural settings, but their ability to re-engineer soil can completely restructure ecosystems and the microbial, plant, arthropod and […]

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The Sign of the Times are the Vines


Contributor: Bud Reaves Invasive vines are colorful and decorative plants that are often used for ornamental purposes for their showy flowers and colorful, sometimes uniquely shaped fruit. They have a downside however, as many invade forested habitats where they can severely limit the growth of, or even kill, trees and shrubs. Fall is a great […]

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Thousand Cankers Disease Reappears in Maryland

Walnut Twig Beetle

Contributor: Dr. Ramesh R. Pokharel, Plant Disease Specialist, Maryland Department of Agriculture, ANNAPOLIS, MD (August, 2019) – Thousand cankers disease (TCD) is a complex problem in walnuts, Juglans spp., caused by the fungus Geosmithia morbida and transmitted by walnut twig beetle (WTB), Pityophthorus juglandis. The beetles tunnel under tree bark and introduce the fungus, […]

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Preventing Invaders


Contact: James Young, Plant Protection and Quarantine, USDA APHIS | Matt Travis, MD State Plant Health Director, USDA APHIS | ANNAPOLIS, MD (December 1, 2015) – Exotic species are in the news almost daily. They can be found in our parks and even in our own backyards. Sadly, many of them are so […]

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White Nose Syndrome

Little Brown Bat

White Nose Syndrome Fungus – Pseudogymnoascus destructans* Contact: Dana Limpert, Conservation Specialist, MD Department of Natural Resources Wildlife and Heritage Service | ANNAPOLIS, MD (February 1, 2015) – White nose syndrome (WNS or PD, Pseudogymnoascus destructans*) was first confirmed in Maryland bat overwintering hibernacula in 2010. The disease has been documented in all major […]

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Thousand Cankers Disease


Contacts: Dave Clement, University of Maryland Extension | Karen Rane, University of Maryland Plant Diagnostic Lab | ANNAPOLIS, MD (December 10, 2014) – Thousand cankers disease (TCD) is a disease complex first discovered in the western United States that primarily affects black walnut (Juglans nigra). This disease is the result of the combined […]

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Chronic Wasting Disease

Chronic Wasting Disease Map

Brian Eyler | Maryland DNR | ANNAPOLIS, MD (January 1, 2013) – Chronic wasting disease (CWD) is one of several diseases classified as transmissible spongiform encephalopathies, or TSE’s. Scrapie in sheep, mad cow disease (BSE), and variant Creutzfeldt-Jakob disease (vCJD) in humans, are also TSE’s. While humans can contract vCJD from eating BSE-infected beef, […]

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