Residential recycling and disposal search tool

Noxious and invasive weeds

How to dispose noxious and invasive weeds

  • Blueweed

  • Canada thistle

  • Common tansy

  • Creeping bellflower

  • Diffuse knapweed

  • Leafy spurge

  • Nodding thistle

  • Purple loosestrife

  • Scentless chamomile

  • Spotted knapweed

  • Toadflax

Common noxious and invasive species to Calgary

View a full list of noxious and invasive species common to Calgary that must be disposed at the landfill.

How to dispose

There are two ways to dispose of noxious and invasive weeds depending on whether you have small or large quantities.

Small quantities of noxious and invasive weeds

  • Put into your black cart

Put small quantities of bagged noxious and invasive weeds directly into your black cart as garbage.

  • Noxious and invasive weeds must be bagged and tied closed to prevent seeds from spreading
  • The bagged noxious and invasive weeds must fit inside of the black cart. Make sure the lid can be pulled over. Do not leave bags of noxious weeds outside of the cart – they will not be collected even if tagged.

Large quantities of noxious and invasive weeds

  • Take to a City Eco Centre

Take large quantities of bagged noxious and invasive weeds to a City Eco Centre for disposal– charges will apply.

  • Noxious and invasive weeds must be bagged and tied closed to prevent seeds from spreading.
  • Your load must only contain noxious and invasive weeds as this material must be disposed of in a separate section at the landfill. You must notify the scale house operator that you have noxious and invasive weeds.

Why can't this be composted?

These invasive species can aggressively spread during transportation and processing at the composting facility. By taking these troublesome species to the landfill we maintain high compost quality and reduce the spread of noxious and invasive weeds in our community.

Map of Eco Centre locations

Image credit

  • Blueweed: Photo by SSISC
  • Common tansy: Photo by 42recorder on Flickr
  • Creeping bellflower: Photo by Wisconsin First Detector Network on Flickr
  • Diffuse knapweed: Image credit: Roman, CC BY 4.0 <https://creativecommons.org/licenses/by/4.0>, via Wikimedia Commons
  • Spotted knapweed: Photo by plant_diversity on Flickr
  • Leafy spurge: Photo by plant_diversity on Flickr
  • Nodding thistle: Photo by Jon Sullivan on Flickr
  • Purple loosestrife: Photo by Steve Knight on Flickr
  • Scentless Chamomile: Photo by Tero Karppinen on Flickr
  • Toadflax: Photo by Adriana W. Van Leeuwen on Flickr

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