Common Tansy: TipsForControllingTansy Weeds.Common Tansy (Tanacetum Vulgare). What is tansy? The plant may get 3 to 4 feet (1 m.) tall and sports button-like yellow flowers on top of stiff stems. The leaves are ferny and alternate on reddish purple stems. Learn how to identify and control Common Tansy in your pastures. Tansy ragwort is an herbaceous plant (soft stems and leaves) with yellow flowers. The stems grow upright 0.5–4 feet tall. It is a widespread weed in the Pacific Northwest. It is common in areas disturbed by grazing, logging, construction, or fire. Take action to controltansy ragwort. Common tansy has a long history of medicinal use but has become a problem weed in pastures and along roadsides, fence llines and stream banks. This publication includes the most recent information on biology, ecology, history and management of this weed. Tansy Ragwort Control. By law, all herbicides must be used in strict accordance with label instructions. Tools for tansy ragwort control. • Protective clothing, including gloves, and face mask if allergic to the tansy alkaloids. CONTROL INFORMATION. Tansy Ragwort. Senecio jacobaea Sunflower Family. Identification TipsTansy ragwort is a biennial or short-lived perennial forb. Common Tansy: TipsForControllingTansy Weeds. Asteraceae - Daisy Family - Tribe Anthemideae Images. biological control of tansy ragwort. Mowing is ineffective in controllingtansy ragwort because. it stimulates vegetative growth and leaves below-ground roots intact. Prescribed burning during. the reproductive stage may reduce populations. Tansy ragwort (Senecio jacobaea), also known as stinking willie, is a toxic invasive biennial or short-lived perennial plant introduced to Canada from Europe in the 1850s via the ballast water of ships. Chemical Controls: Tansy is relatively easy to control with common herbicides like 2,4-D, or a blend of 2,4-D and clopyralid (Curtail®), or picloram (Tordon® 22K), however the weed patches must be monitored and retreated to kill any tansy that regenerates from the roots. WeedWise tips to target tansy ragwort. Know your invader.Controltansy ragwort before it can become a problem. Controltansy ragwort when infestations are small and manageable to reduce the time and expense needed to eradicate them. Tansy ragwort can be controlled using auxinic herbicides (mimics of auxin, a naturally-occurring plant growth regulator). The best timing of application is when tansy ragwort is actively growing in the rosette stage either in the spring or mid-fall. Herbicides are less effective after. Identification Tips · Tansy ragwort is a biennial or short-lived perennial forb.· Selective herbicides that are effective on tansy ragwort include 2,4-D, dicamba or a combination (e.g. Weedmaster, Weed-B-Gon). · Spot spraying with glyphosate (Roundup) can effectively controltansy ragwort. photo by carletongardener. Possible biological controls The Ministry of Agriculture of Canada lists several agents that appear to be effective forcontrollingTansy Ragwort in British Columbia. Hopefully one or more of these agents may also take a fancy to Common Tansy.
