Ground ivy. Photo provided by: Leslie J. Mehrhoff, University of Connecticut, Bugwood.org.
Canada thistle. Photo provided by: John M. Randall, The Nature Conservancy, Bugwood.org.
Close-up of Canada thistle leaves. Photo by: Leslie J. Mehrhoff, University of Connecticut, Bugwood.org.
Dandelion. Photo provided by: Howard F. Schwartz, Colorado State University, Bugwood.org.
Dandelion seedlings. Photo provided by: Joseph M. DiTomaso, University of California – Davis, Bugwood.org.
Clover. Photo provided by: Howard F. Schwartz, Colorado State University, Bugwood.org.
Tag Archives: Canada thistle
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 ThistleAll Photos by Gordon Johnson
Extension Agriculture and Commercial Horticulture Agent, University of Delaware, Kent County