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Weed Information: Noxious Weeds

 
 
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 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

Grass
Brome, downy, Bromus tectorum Brome, Japanese, Bromus japonicus


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

Ornamental

Baby’s-breath, common,
Gypsophila paniculata
Bellflower, creeping,
Campanula rapunculoides
Clematis, yellow,
Clematis tangutica
Dame's rocket,
Hesperis matronalis
 
 
 
 
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For more information about the content of this document, contact Chris Neeser.
This document is maintained by Stacey Tames.
This information published to the web on August 29, 2013.
Last Reviewed/Revised on August 21, 2018.