Yellow Thistle – Native Plant of the Day 11/09/2023
Photo from 5/12/2014. Location: Chickamauga Battlefield, Catoosa County, Ga.
More photos / info at the Cirsium horridulum detail page.
Yellow Thistle – Cirsium horridulum
Hooker’s Thistle – Native Plant of the Day 01/08/2017
Photo from 6/21/2011. Location: Boise Foothills, Ada County, ID.
More photos / info at the Cirsium hookerianum detail page.
NOTE: A comment (below) from Bruce Bennett put my 5-year-old identification of this plant as Cirsium hookerianum in question. While I haven’t yet had time to research my reason for discounting other white-flowered thistles, some quick research on Bruce Bennett’s credentials implies that he can speak with some authority pertaining to plants in the area, making his identification of this plant as Cirsium undulatum (Wavy-leaf Thistle) almost certainly correct. Thank you, Bruce!
Hooker’s Thistle, White Thistle – Cirsium hookerianum
Yellow Thistle, a native species, has been added to the USWildflowers database (6/02/2014.) Scientific name is Cirsium horridulum. Photo below was taken in Catoosa County, GA on May 12, 2014. Go to the Yellow Thistle detail page for more photos and information.
Yellow Thistle – Cirsium horridulum
USWildflowers Daily Plant 12/16/2012
Photo from 6/13/2009. Location: Rutherford County, TN
Bristle Thistle, an introduced and possibly invasive species. For more information go to the Carduus nutans detail page.
Bristle Thistle, Musk Thistle, Nodding Thistle – Carduus nutans
USWildflowers Daily Plant 12/15/2012
Photo from 8/14/2004. Location: Polk County, TN):
Bull Thistle, an introduced and possibly invasive species. For more information go to the Cirsium vulgare detail page.
Bull Thistle – Cirsium vulgare
Hooker’s Thistle, a native species, has been added to the USWildflowers database (11/09/2012.) Scientific name is Cirsium hookerianum. It is also known by the common name White Thistle. Photo below was taken in the Boise Foothills, Ada County, ID on June 21, 2011. Go to the Hooker’s Thistle detail page for more photos and information.
Hooker’s Thistle, White Thistle – Cirsium hookerianum