2007年1月2日 · Distribution of bull thistle in Alaska. Management. Bull thistle does not withstand cultivation. Cutting plants at the soil surface is an effective method of control. Control programs should be maintained for at least 4 years. Bull thistle is relatively easy to control with herbicides. Two USDA approved insects have been
Bull Thistle - Flowering Plant Species of Alaska - Alaska Handbook
Bull Thistle in Anchorage Alaska- Cirsium vulgare, commonly known as Bull Thistle, is a robust and spiny flowering plant belonging to the Cirsium genus. It is characterized by its tall stature, purple-pink flower heads, and prickly leaves, making it a prominent inhabitant of disturbed habitats and pastures across Europe and North America.
Native range of the species includes Røros, Norway, Vytegra, Russia, and Vologda, Russia (Hultén 1968), which has a 76%, 67%, and 63% climatic match with Nome, respectively. Thus establishment of bull thistle in arctic alpine ecogeographic region in Alaska is possible. CLIMEX for Windows, Version 1.1a. 1999. CISRO Publishing, Australia.
Forest Service • Alaska Region, April 2007 • www.fs.fed.us/r10/spf/fhp/ 3 Bull Thistle (Cirsium vulgare) Sunflower Family • Biennial erect plant rises from a fleshy taproot. A large, flat rosette forms in the first year, and flowers and stems elongate in the second year. Stem grows 2 to 5 feet tall with many spreading branches.
11 PURPLE Wildflowers in Alaska! (ID Guide) - Bird Watching HQ
Today, we will look at 11 common wildflowers that are purple in Alaska. #1. Bull Thistle. Also known as Boar Thistle, Common Thistle, Dodder, and Spear Thistle. Bull Thistle is a spiny and common purple wildflower in Alaska. So be careful if handling! It’s also a great flower if you want to attract giant bees and butterflies.
Selected Invasive Plants of Alaska - US Forest Service
Bull thistle forms dense, spiny, stands in meadows, pastures, streamsides, and forest openings. This highly-competitive weed monopolizes water, nutrients, and growing space. Once established, stands of bull thistle can suppress the growth of conifer seedlings, reduce land values, and restrict the movement of people and animals.
Bull thistle is found on dry and wet soils, but is most common on soils with intermediate moisture. Geographical Distribution: Cirsium vulgare is a native of Europe, western Asia, and North Africa. It is found in the US in the states shaded green on the map. Ecological Damage: Although bull thistle is a problem predominantly in disturbed
Region 10 - Forest & Grassland Health - US Forest Service
Bull thistle has been found at a number of locations around Alaska, including Fairbanks, Anchorage, Ketchikan, and Haines. It is especially abundant on Prince of Wales Island along roadsides. Canada thistle is identified by its prickly stems and leaves, and purple-pink flowers about one inch in diameter.
bull thistle (Selected Invasive Plants of Alaska) · iNaturalist
Cirsium vulgare ( Spear Thistle) is a species of the genus Cirsium, native throughout most of Europe (north to 66°N, locally 68°N), western Asia (east to the Yenisei Valley), and northwestern Africa (Atlas Mountains). It is also naturalised in North America and Australia and is as an invasive weed in some areas.
Girdwood, Anchorage, Alaska - Wikipedia
Girdwood is a resort town within the southern extent of the Municipality of Anchorage in the U.S. state of Alaska. Located near the end of the Turnagain Arm of Cook Inlet , Girdwood lies in a valley in the southwestern Chugach Mountains , surrounded by seven glaciers feeding into a number of creeks, which either converge within the valley or ...