Below you can find information about all the weeds regulated by the Alberta Weed Control Act. The information includes how these weeds can be identified and why they are regulated.

To find a regulated weed faster, all weeds are separated into categories based on their regulatory designation, their growth form and the colour of their flower.

Note: The following will only look up regulated weed species under the Alberta Weed Control Act; other plants or nuisance weeds are not included.

Use the advanced search to look up by Regulatory Designation ,Growth Form or Flower Colour.
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Autumn Olive
Autumn Olive
Bighead Knapweed
Bighead Knapweed
Black Henbane
Black Henbane
Black Knapweed
Black Knapweed
Blueweed
Blueweed
Broad-Leaved Pepper-Grass
Broad-Leaved Pepper-Grass
Brown Knapweed
Brown Knapweed
Canada thistle
Canada thistle
Common Baby's Breath
Common Baby's Breath
Common Barberry
Common Barberry
Common Buckthorn
Common Buckthorn
Common Crupina
Common Crupina
Common Mullein
Common Mullein
Common St. John's Wort
Common St. John's Wort
Common Tansy
Common Tansy
Creeping Bellflower
Creeping Bellflower
Dalmation Toadflax
Dalmation Toadflax
Dame's Rocket
Dame's Rocket
Diffuse Knapweed
Diffuse Knapweed
Downy Brome
Downy Brome
Dyer's Woad
Dyer's Woad
Eurasian Watermilfoil
Eurasian Watermilfoil
Field Bindweed
Field Bindweed
Field Scabious
Field Scabious
Flowering Rush
Flowering Rush
Garlic Mustard
Garlic Mustard
Giant Hogweed
Giant Hogweed
Giant Knotweed
Giant Knotweed
Great Burdock
Great Burdock
Himalayan Balsam
Himalayan Balsam
Hoary Alyssum
Hoary Alyssum
Hound's-Tongue
Hound's-Tongue
Hybrid Japanese Knotweed
Hybrid Japanese Knotweed
Hybrid Knapweed
Hybrid Knapweed
Japanese Brome
Japanese Brome
Japanese Knotweed
Japanese Knotweed
Jointed Goatgrass
Jointed Goatgrass
Leafy Spurge
Leafy Spurge
Lesser Burdock
Lesser Burdock
Marsh Thistle
Marsh Thistle
Meadow Hawkweed
Meadow Hawkweed
Meadow Knapweed
Meadow Knapweed
Medusahead
Medusahead
Mouse-ear Hawkweed
Mouse-ear Hawkweed
Nodding Thistle
Nodding Thistle
Orange Hawkweed
Orange Hawkweed
Oxeye Daisy
Oxeye Daisy
Pale Yellow Iris
Pale Yellow Iris
Perennial Sow Thistle
Perennial Sow Thistle
Plumeless Thistle
Plumeless Thistle
Puncturevine
Puncturevine
Purple Loosestrife
Purple Loosestrife
Red Bartsia
Red Bartsia
Rush Skeletonweed
Rush Skeletonweed
Russian Knapweed
Russian Knapweed
Saltlover
Saltlover
Scentless Chamomile
Scentless Chamomile
Spotted Knapweed
Spotted Knapweed
Squarrose Knapweed
Squarrose Knapweed
Sulphur Cinquefoil
Sulphur Cinquefoil
Tall Buttercup
Tall Buttercup
Tamarisk Species
Tamarisk Species
Tansy Ragwort
Tansy Ragwort
Tyrol Knapweed
Tyrol Knapweed
White Cockle
White Cockle
Woolly Burdock
Woolly Burdock
Yellow Clematis
Yellow Clematis
Yellow Nutsedge
Yellow Nutsedge
Yellow Starthistle
Yellow Starthistle
Yellow Toadflax
Yellow Toadflax
Hoary Cress
Hoary Cress