Murdannia keisak October, 2011 Castor Aralia September, 2011 Oak Wilt August, 2011 Rose Rosette Disease July, 2011 Beefsteak plant June, 2011 Bait April, 2011 Goats March, 2011 Bamboo January, 2011 Paper Mulberry December 2010 Pine Shoot Beetle November 2010 Winter Moth October 2010 Imperata cylindrica September 2010 Trifoliate Orange August 2010 Leatherleaf Mahonia July 2010 Chocolate Vine June 2010 White Nose Syndrome May 2010 Feral Cats April 2010 Autumn-olive March 2010 Norway Maple January 2010 Feral Hogs December 2009 Could Your Pet Be an Invasive Species? November 2009 Elm Yellows October 2009 Japanese Knotweed September 2009 Black and pale swallow-worts August 2009 Asian Longhorned Beetle July 2009 Hydrilla June 2009 Mimosa May 2009 Nutria April 2009 Grass Carp March 2009 Bait bucket introductions February 2009 Firewood January 2009 Beech Bark Disease Complex December 2008 Winged Euonymous November 2008 Brown Marmorated Stink Bug October 2008 Kudzu August 2008 Poison Hemlock July 2008 Gypsy Moth June 2008 Didymo May 2008 Chestnut Blight April 2008 Whirling Disease March 2008 Water Lettuce January 2008 Laurel Wilt December 2007 Rusty Crayfish November 2007 Miscanthus October 2007 Tree of Heaven September 2007 Wavyleaf basketgrass August 2007 Chinese Mitten crab July 2007 Japanese Hops June 2007 Princess Tree (Paulownia tomentosa) May 2007 Callery pears April 2007 MSX, (Haplosporidium nelsoni) March 2007 Varroa Mite February 2007 Emerald Ash Borer January 2007 Japanese Barberry December 2006 Wineberry September 2006 Purple Loosestrife July 2006 Multiflora Rose May 2006 Viburnum Leaf Beetle April 2006 House Sparrow March 2006 Green Crab February 2006 Sirex noctilio January 2006 Japanese Honeysuckle November 2005 Resident Canada Geese October 2005 Phragmites July 2005 Brown Marmorated Stink Bug June, 2005 Mute Swan May, 2005 Canada Thistle April, 2005 Bush Honeysuckle March, 2005 Lesser Celandine February, 2005 Nutria January, 2005 Chrysanthemum White rust November, 2004 Mile a Minute October, 2004 Giant African Snails September, 2004 Sudden Oak Death August, 2004 Porcelainberry July, 2004 Water Chestnut June, 2004 Plum Pox May, 2004 Zebra Mussel April, 2004 Emerald Ash Borer March, 2004 English Ivy February, 2004 Pine Shoot Beetle January, 2004 Oriental Bittersweet December, 2003 Pryeria sinica November, 2003 Asian Lady Beetle October, 2003 Japanese Stiltgrass September, 2003 Red Imported Fire Ant August, 2003 Mute Swan June, 2003 Garlic Mustard May, 2003 Giant Hogweed April, 2003 Hemlock Woolly Adelgid March, 2003 Maryland Invasive Species Brochure February, 2003

Wavyleaf Basketgrass, photo: K. Kyde