| Prohibited Noxious | Noxious Weeds | Weed Information Home Page
Weeds listed in the Alberta Weed Control Act are a threat to Alberta’s environment, economy and society. They have the potential to degrade habitiats, reduce biodiversity, increase erosion, cause widlfires, reduce property value, create obstacles to international trade and cause reduction in productivity of agricultural land.
Under the Alberta Weed Control Act, Prohibited Noxious weeds need to be destroyed and Noxious weeds need to be controlled. Please refer to Legislation link for a copy of the Act and for more information.
The best method of weed control is prevention. Please familiarize yourself with these weeds to avoid introductions and minimize spread on the land you own or occupy.
Noxious Weeds
Grass | Herbs/Forbs | Ornamental
Herbs/Forbs
Bindweed, field,
Convolvulus arvensis | Chamomile, scentless,
Tripleurospermum inodorum | Hoary cress, lens-podded,
Lepidium chalepense | Spurge, leafy,
Euphorbia esula |
Blueweed,
Echium vulgare | Cockle, white,
Silene latifolia ssp. alba | Hound's-tongue,
Cynoglossum officinale | Tansy, common,
Tanacetum vulgare |
Burdock, great,
Arctium lappa | Daisy, oxeye,
Leucanthemum vulgare | Mullein, common,
Verbascum thapsus | Thistle, Canada,
Cirsium arvense |
Burdock, lesser,
Arctium minus | Henbane, black,
Hyoscyamus niger | Pepper-grass, broad-leaved,
Lepidium latifolium | Toadflax, Dalmatian,
Linaria dalmatica |
Burdock, woolly,
Arctium tomentosum | Hoary cress, glove-podded,
Lepidium appelianum | Scabious, field,
Knautia arvensis | Toadflax, yellow,
Linaria vulgaris |
Buttercup, tall,
Ranunculus acris | Hoary cress, heart-podded,
Lepidium draba | Sow thistle, perennial,
Sonchus arvensis | |
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Ornamental
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