Weed Hotline Issue 20


American speedwell. Photo by: Mary Ellen (Mel) Harte, , Bugwood.org

Henbit deadnettle. Photo by: Steve Dewey, Utah State University, Bugwood.org

Hairy bittercress. Photo by: Dan Tenaglia, Missouriplants.com, Bugwood.org

Henbit deadnettle seedling. Photo by: Ohio State Weed Lab Archive, The Ohio State University, Bugwood.org

Downy brome (Cheatgrass). Photo by: Leslie J. Mehrhoff, University of Connecticut, Bugwood.org

European field pansy (field violet). Photo by: Ohio State Weed Lab Archive, The Ohio State University, Bugwood.org

Purple deadnettle. Photo by: Richard Old, XID Services, Inc., Bugwood.org

Canadian horseweed. Photo by: Richard Old, XID Services, Inc., Bugwood.org

Field violet (European field pansy). Photo by: Richard Old, XID Services, Inc., Bugwood.org

Common Chickweed. Photo by: Richard Old, XID Services, Inc., Bugwood.org

Annual rygrass. Image found at http://www.agry.purdue.edu/turf/tips/2005/cale49.htm and was by Cale Bidgelow.

Weed Hotline Issue 22

Horseweed or Marestail Seedling

Downy Brome Seedling

Shepard’s Purse Seedling

Wild Mustard Seedling

Annual Bluegrass Seedling

Purple Deadnettle Seedling

Henbit Seedling

Common Chickweed Seedling
All Photos From Online Pacific Northwest Insect and Weed Management Handbooks
Photos Credit: Oregon State University Jed Colquhoun and Larry Burrell photo Collection

Wild Radish

Hairy Bittercress

Corn Speedwell

Persian Speedwell

Purslane Speedwell

Ivyleaf Speedwell

Field Violet or Field Pansy

Yellow Rocket

Annual Ryegrass

Mousear chickweed

All Photos Courtesy of Shawn Askew, Turfgrass Weed Science, Virginia Polytechnic Institute & State University. www.ppws.vt.edu/~saskew/turfweeds/ or www.turfweeds.net