Tansy Ragwort

LScott (ISCBC)

Plant Bio

Common Name:Tansy ragwort
Family:Asteraceae
Genus:Senecio
Species:jacobaea
Classification/Rank:Very Invasive
Method of Transportation:Spreads mainly by seed dispersal by wind, within 10 m of the original infestation, but seeds can be transported in soil carried on equipment and vehicles, as well as by people and livestock.
Habitat/Range:• one large site reported on Haida Gwaii. • several sites reported in the PG and Robson Valley IPMAs in 2006

Description

• biennial or short lived perennial herb from taproot; grows 0.2 to to 1.0 m tall
• stems erect, solitary or several branched above, sparsely to densely white woolly-hairy
• basal leaves broadly lance shaped, stalked, 2 to 3 times pinnately cut, smooth; stem leaves similar, reduced upwards becoming unstalked
• flowers yellow; several to numerous clusters

News

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posted: November 7, 2018
2017 Annual Report from NWIPC is now online

NWIPC's Annual Report for 2017 was released at our AGM in Smithers in October 2018. Check it out here.

posted: November 3, 2018
WeedsBMP App for Forage and Livestock Producers Now Available

Land owners and managers have long recognized the need to control invasive plants to limit their impacts. In May 2018, a new smartphone app...