![](http://bp0.blogger.com/_8xC9bwq6AVU/RriV_55rHfI/AAAAAAAAAUk/R6dDXge4rlA/s400/marestail+flower.jpg)
Marestail (horseweed) in Flower
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Marestail and Ragweed in Former Farmland Site
![](http://bp2.blogger.com/_8xC9bwq6AVU/RriVwZ5rHdI/AAAAAAAAAUU/Pa4N9Y-Mg2E/s400/marestailfield.jpg)
Former Farmland Field Growing Up in Marestail Prior to Being Developed
![](http://bp0.blogger.com/_8xC9bwq6AVU/RriUI55rHaI/AAAAAAAAAT8/0HmTR5qFS5A/s400/IMG_0224.JPG)
Canada Thistle, Common in Former Farmland Sites
![](http://bp2.blogger.com/_8xC9bwq6AVU/RriUAZ5rHZI/AAAAAAAAAT0/aqY6zxKggQw/s400/IMG_0221.JPG)
Canada Thistle Showing Fluffy Seeds
![](http://bp1.blogger.com/_8xC9bwq6AVU/RriT2J5rHYI/AAAAAAAAATs/WYLnHaW40k4/s400/IMG_0214.JPG)
Canada Thistle Patch
![](http://bp0.blogger.com/_8xC9bwq6AVU/RriUU55rHbI/AAAAAAAAAUE/TsgCMNCo3rg/s400/IMG_0212.JPG)
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