17, Alberta, Canada Coordinates. Much of the plant is covered in long, sticky hairs. grows across wide range, in plains, foothills, montane, and subalpine regions. Marsh thistle (Cirsium palustre) white flower. ��Dr^�n�j`��|�$�&����+ɝ 63D��t�~m`�`�)��c RoXM�dԇ��$��d� ��������.� 6��qȓ���� �� All rights reserved. Density. Marsh thistle is one of the tallest biennial in Finland (compare giant hogweed): the stem that rises from the centre of its rosette often reaches 2 metres (6.5 feet) in height. The weeds in the prohibited noxious class are those which are known to pose an intolerable economic threat to production, recreation or the general environment, and the degree of infestation is such that eradication is physically and economically feasible. Pas besoin de vous inscrire, achetez dès maintenant ! Positive - Subject was present at time of report.. h�bbd```b``��@$� The stem is … Low Infestation Status ... Verifier changed species to possible Marsh Thistle. CIRSIUM PALUSTRE (MARSH THISTLE) LITERATURE SEARCH AND HABITAT POTENTIAL RISK ANALYSIS Prepared for: Ministry of Forests, Forest Practices Branch Range Section, Noxious Weeds Program 515 Columbia Street Kamloops, BC V2C 2T7 Prepared by: Nancy Fraser 2695 Cameron-Taggart Rd R.R.#1, Cobble Hill, BC V0R 1L0 (250) 743-5524 nefraser@pacificcoast.net Final Report: March, … Please choose between the following five options: Our strategic direction to make Edmonton a healthy, urban, climate resilient city that supports a prosperous region. Canada Thistle is the only species of today's Weed Control Act that was already regulated in the first Alberta weed regulation in 1907. The seedling grows slowly for about two weeks until the leaves are about 3 cm long and then forms a rosette. It produces a single, central stalk with dark green, succulent (and mildly prickly) leaves and numerous slender flowering branches that extend from the upper third of the main stem. Nodding Thistle (Carduus nutans) Description . Provincial Designation: Prohibited noxious: Life Cycle: Biennial: Mode of Spread: Seed: Pest Comments <