Main content of the website

  • font size:A
  • A
  • A

Weed Control

Woodlands County prevents the spread of prohibited noxious and noxious weeds as defined by the Weed Control Act, Weed Designation Regulation (Alberta Regulation 19/2010) and as may be amended by local bylaw or ministerial order. 

Policy 6309 - Vegetation Management outlines the process and procedures used to control prohibited noxious and noxious weeds on local road right-of-ways and private land. Landowners who wish to maintain road right-of-ways adjacent to their property must complete a No Spray Agreement. The agreement can be found HERE.


The following are the prohibited noxious and noxious weeds as currently defined under the Weed Control Act.

Learn more about weeds through Alberta Invasive Species Council

Policy 6318 Tall Buttercup/Ox eye Daisy Control Program

Fact Sheet Giant Hogweed with Cow Parsnip

Learn More Stem-Mining Weevil of Canada Thistle

Prohibited Noxious

Prohibited noxious species with demonstrated detrimental effects in other provinces or states but not established in Alberta. The objective is to prevent the establishment of prohibited noxious weeds in Alberta.

  • Autumn olive
  • Himalayan balsam
  • Common barberry
  • Red bartsia
  • Common buckthorn
  • Sulphur cinquefoil
  • Common crupina
  • Dyer’s woad
  • Eurasian water milfoil
  • Flowering rush
  • Garlic mustard
  • Jointed goatgrass
  • Meadow hawkweed
  • Mouse-ear hawkweed
  • Orange hawkweed
  • Hoary alyssum
  • Giant hogweed
  • Pale yellow iris
  • Bighead knapweed
  • Black knapweed
  • Brown knapweed
  • Diffuse knapweed
  • Hybrid knapweed
  • Meadow knapweed
  • Russian knapweed
  • Spotted knapweed
  • Squarrose knapweed
  • Tyrol knapweed
  • Giant knotweed
  • Hybrid Japanese knotweed
  • Japanese knotweed
  • Purple loosestrife
  • Medusahead
  • Yellow nutsedge
  • Puncturevine
  • Tansy ragwort
  • Rush skeletonweed
  • Saltcedar
  • Saltlover
  • Common St. John’s wort
  • Yellow starthistle
  • Chinese tamarisk
  • Smallflower tamarisk
  • Marsh thistle
  • Nodding thistle
  • Plumless thistle

Noxious Weeds

Noxious weeds are widely spread but can still pose significant economic hardship once established. The objective is to protect those who do not have these weeds from infestation.

  • Common baby’s-breath
  • Field bindweed
  • Creeping bellflower
  • Blueweed
  • Downy brome
  • Japanese brome
  • Great burdock
  • Lesser burdock
  • Wooly burdock
  • Tall buttercup
  • Scentless chamomile
  • Yellow clematis
  • White cockle
  • Oxeye daisy
  • Dame’s rocket
  • Black henbane
  • Globe-podded hoary cress
  • Heart-podded hoary cress
  • Lens-podded hoary cress
  • Hound’s tongue
  • Common mullein
  • Broad-leaved pepper-grass
  • Field scabious
  • Perennial sow thistle
  • Leafy spurge
  • Common tansy
  • Canada thistle
  • Dalmation toadflax
  • Yellow toadflax

Contact Agriculture Services for more information.
Phone: 780-584-3866
Toll-Free: 1-866-584-3866