Jimsonweed (Datura stramonium), commonly known as Devil’s Trumpet, is usually found in mixed ornamental garden beds and in fields where canola has been grown (within the last three years). 

All parts of the jimsonweed plant are toxic to livestock and people. To help manage the spread of this invasive weed, please be on the lookout for this plant. 

Jimsonweed is federally classified as a Class 1 weed (prohibited noxious) under the Weed Seeds Order of the Canadian Seeds Act. 

Image of Jimsonweed buds

How to identify jimsonweed

Jimsonweed seedpod
  • Unique-looking plant with dark purple stems
  • Deep green leaves that have coarsely toothed edges
  • Flowers are trumpet-shaped and can be white to purple in colour
  • The prickly seedpod is large and round
  • It can tower over canola plants so is noticeable in a field when harvesting
  • Jimsonweed and canola seeds are about the same size and colour, making them extremely difficult to remove from canola seed

What to do if you find jimsonweed 

To monitor and control the spread of this weed, please contact Transportation and Agriculture Services Department at 780-417-7100 if you find it on your property.  

If you find jimsonweed in your field, you should remove it immediately and follow these steps: 

  • Wear gloves and long sleeves when hand pulling
  • Double bag the plants and take to the landfill
  • Do not compost or burn jimsonweed as this releases the toxins
  • Do not bale canola stubble for feed in fields where jimsonweed has been found as it is toxic to livestock 

Further information: 

County Connect

Ask a question, provide feedback or report an issue.

Related pages

Last updated: Monday, August 08, 2022
Page ID: 49178