Curlycup gumweed (Grindelia squarrosa)

Curlycup gumweed is a biennial or short-lived perennial forb.
It … Read More

  Giant Ragweed (Ambrosia trifida)

Giant ragweed is widespread in North America, Canada and northern … Read More

  Locoweed (Astragalus mollissimus Torr.)
Photo courtesy of Jean-Christophe Benoist – Own work, CC BY-SA 3.0, Photo courtesy of James St. John on … Read More

  Prickly Lettuce (Lactuca serriola)

Prickly lettuce is an annual forb that was introduced to … Read More