tansy ragwort

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tan′sy rag′wort

a European composite plant, Senecia jacobaea, naturalized in North America poisonous to cattle.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.tansy ragwort - widespread European weed having yellow daisylike flowerstansy ragwort - widespread European weed having yellow daisylike flowers; sometimes an obnoxious weed and toxic to cattle if consumed in quantity
genus Senecio, Senecio - enormous and diverse cosmopolitan genus of trees and shrubs and vines and herbs including many weeds
weed - any plant that crowds out cultivated plants
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Breuner listed herbal products available online but deemed unsafe for children: aconite (also known as bushi), species from the genus Aristolochia, belladonna, blue cohosh, borage, broom, calamus, chaparral, coltsfoot, comfrey germander, life root, lobelia, pennyroyal, poke root, sassafras, skullcap, tansy ragwort, and wormwood.
Aerial spraying controls invasive species like Scotch broom, Himalayan blackberry, and tansy ragwort. Left unchecked, these aggressive weeds choke off Oregon's native plants and trees such as Douglas fir.
If you mean tansy ragwort that grows rampantly in Oregon, I would never intentionally plant it.