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

Weed Hotline Issue 20

Marestail (horseweed) in Flower

Marestail and Ragweed in Former Farmland Site

Former Farmland Field Growing Up in Marestail Prior to Being Developed

Canada Thistle, Common in Former Farmland Sites

Canada Thistle Showing Fluffy Seeds

Canada Thistle Patch
Bull Thistle, Not to be Confused with Canada Thistle
All Photos by Gordon Johnson
Extension Agriculture and Commercial Horticulture Agent, University of Delaware, Kent County