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2. Cirsium arvense - Wikipedia

   en.wikipedia.org/wiki/Cirsium_arvense

   Species Profile- Canada Thistle (Cirsium arvense), National Invasive Species Information Center, United States National Agricultural Library. Lists general information and resources for Canada thistle. Profile: Canada Thistle (Cirsium arvense) Photos, Drawings, Text. (Wild Plants of Winnipeg from Nature Manitoba)

3. Aceria anthocoptes - Wikipedia

   en.wikipedia.org/wiki/Aceria_anthocoptes

   Aceria anthocoptes is considered to be a good potential biological control agent for the invasive weed Canada thistle (Cirsium arvense) Female specimens have a somewhat fusiform shape, and range in colour. Depending upon the stage of development, both nymphs and adults can appear white, tan, pink, or yellow. [4]

4. List of Northern American nectar sources for honey bees

   en.wikipedia.org/wiki/List_of_Northern_American...

   Canada thistle: Carduus arvensis: Perennial light honey of good quality [3] F Thistle: Centaurea spp. Annual 7 9 no feral minor F Mountain bluet: Centaurea Montana (Knapweed) Short-lived Perennial 5 5 no?? feral major F Creeping thistle: Cirsium arvense: Perennial 7 9 feral (invasive in North America) F Sweet autumn clematis Clematis terniflora ...

5. Cirsium - Wikipedia

   en.wikipedia.org/wiki/Cirsium

   Cirsium vulgare (spear thistle) is listed in the United States (where as a non-native invasive species it has been renamed "bull thistle") as a noxious weed in nine states. [6] Some species in particular are cultivated in gardens and wildflower plantings for their aesthetic value and/or to support pollinators such as bees and butterflies.

6. Urophora cardui - Wikipedia

   en.wikipedia.org/wiki/Urophora_cardui

   The Canada thistle gall fly has been introduced to North America from Europe to control the population of its host plant, Canada, or creeping thistle, which is an invasive, introduced weed in North America. Gall formed by U. cardui on Cirsium arvense

7. List of invasive species in North America - Wikipedia

   en.wikipedia.org/wiki/List_of_invasive_species...

   Cirsium arvense (Canada thistle) Cirsium vulgare (bull thistle) Colocasia esculenta (wild taro) Commelina communis (Asiatic blue dayflower) Conium maculatum (poison hemlock) Cortaderia selloana (pampas grass) Cosmos sulphureus (sulfur cosmos, yellow Cosmos) Cynodon dactylon (Bermuda grass, dog's tooth grass, devil's grass, couch grass)

8. List of wildflowers of Soldiers Delight - Wikipedia

   en.wikipedia.org/wiki/List_of_wildflowers_of...

   Manual of Vascular Plants of Northeastern United States and Adjacent Canada (Second ed.). Bronx, New York: The New York Botanical Garden. p. 910 pages. "Target building, Soldiers Delight Visitor Center". Google Hybrid Map. 2006; Holmgren, Noel H (1998). Illustrated Companion to Gleason and Cronquist's Manual.

9. Aceria - Wikipedia

   en.wikipedia.org/wiki/Aceria

   A few are economically significant pests, while others are useful as agents of biological pest control of invasive plants such as rush skeletonweed (Chondrilla juncea), creeping thistle (Cirsium arvense), and field bindweed (Convolvulus arvensis). There are over 900 species in the genus. [2])