Choose Your Viburnums with Care

Doublefile viburnum

Contact: Sylvan Kaufman ANNAPOLIS, MD (April 01, 2017) – Gardeners love viburnums for their white spring flowers, compact growth, and colorful fall fruits and foliage. Few gardeners know that some viburnums have become invasive plants and should be avoided. Linden viburnum (Viburnum dilatatum), doublefile viburnum or Japanese snowball (V. plicatum), and Siebold viburnum (V. sieboldii) […]

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Sudden Oak Death Could Be Back in Maryland, and You May Have It.


Contact: Ramesh R Pokharel, Plant Pathologist, Maryland Department of Agriculture ANNAPOLIS, MD (January 05, 2017) – Sudden oak death, a relatively new disease, caused by the pathogen Phytophthora ramorum, was found for the first time in 1995, infecting oaks in California. The disease was known only in California and southwestern Oregon until 2002. However, the U.S. […]

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Invasive Species: They’ve Got “Good Genes”

Callery Pear Field

Contact: Matt Salo, Naturalist, Town of Cheverly | Kerrie L. Kyde, Maryland DNR ANNAPOLIS, MD (December 01, 2016) – Invasive plants cost the U.S. economy billions of dollars each year due to losses they incur in agriculture, forestry, fisheries and the recreation industry, plus the damage they do to native ecosystems. Does genetic make-up affect […]

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Barriers to BSal: Averting the Apocalypse for North American Salamanders

Red-Spotted Newt

Contact: Scott Smith | ANNAPOLIS, MD (November 01, 2016) – Chytrid fungus (Batrachochytrium dendrobatidis or Bd), has been called the greatest threat to global amphibian biodiversity, having caused the disappearance of more than 200 of the world’s frog species since the 1970s. Now there’s a frightening “new kid on the block” called BSal, short for Batrachochytrium salamandrivorans, a close […]

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King of the (Aquatic) Beasts? Lionfish in North America

Lion Fish

Contact: Jonathan McKnight | Photo courtesy of Don DeMaria, USGS ANNAPOLIS, MD (October 01, 2016) – Lionfish have a lot going for them. They are a spectacular little fish, highly variable in coloration and carrying a halo of ornate fin spines that appear both delicate and menacing. Their spines can deliver a powerful toxic assault […]

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Criteria for Deliria?!

Contact: Michael Ellis, M-MCPPC | ANNAPOLIS, MD (March 01, 2016) – Spring is nearly here! Landscapes across Maryland will be covered in beautiful blooms of all kinds. But invasive wisteria species really take that concept to the next level, climbing to the tops of some of Maryland’s tallest trees, smothering and choking out other […]

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“I’m Back!”

Contact: Bob Tatman, MDA-FPM | Photo: Jon Yuschock, ANNAPOLIS, MD (February 01, 2016) – The gypsy moth was brought to Medford, Massachusetts by amateur naturalist Leopold Trouvelot in the late 1860s. Cotton was in short supply in the aftermath of the Civil War and Trouvelot hoped to use the webbing of the gypsy […]

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The Waterwheel… Turning Over North American Wetlands

Contact: Wesley Knapp, Maryland Department of Natural Resources | ANNAPOLIS, MD (January 1, 2016) – We’ve never seen an invasive species quite like this one before. The waterwheel (Aldrovanda vesiculosa L.) is an herbaceous carnivorous aquatic plant closely related to sundews (Drosera spp.) and Venus flytraps (Dionaea muscipula). It catches animal prey through an […]

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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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Lords and Ladies Misbehaving

Contact: Carolyn Puckett, Carroll County Forest Conservancy Board | Photo: Milan Havlis, ANNAPOLIS, MD (November 1, 2015) – No, we are not talking about indiscretions by European aristocrats. Our misbehaving "lords and ladies" are errant populations of Arum italicum, whose common names include "Italian arum," "orange candleflower," "cuckoo's pint," as well as "Italian […]

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