Noxious Weeds

Stewardship & EducationNoxious Weeds

Print the Himalayan Balsam Poster

Himalayan Balsam


Help PLWA Eradicate This Weed

An escaped ornamental, this fast growing aggressive weed has invaded the shores of Pigeon Lake. It grows between .6 to 2 meters tall rapidly out-competing other plants. 

Once developed, the seed capsules are very brittle and explode upon contact.

This plant has been classified by the Alberta government as a prohibited noxious weed which means that it must not be allowed to exist on your property. 

If you encounter any of these plants, help the eradicate program by following the protocol which has been developed at Pigeon Lake as an easy and effective means of removing it:  Pick, Break and Drop.

By following this protocol, the chances of spreading the plant to other areas are reduced and will kill that plant.  Do not pile the plants or dispose of them in a compost pile as they will continue to thrive.  

Please report any plants found in areas away   from the lake shore so that these areas can be monitored in futre years. 

Contact: Don Davidson at

Riparian / Shorline Plants in the Pigeon Lake Area: What's a Wildflower? What's a Weed?

View a presentation to learn What's a Wildflower and What's a Weed.


Donate Today


ENDOWMENT FUND: Pigeon Lake Watershed Association has a Family of Endowed Funds with the Edmonton Community Foundation. To contribute, please contact Noel Xavier at

PLWA Charitable BN/Registration Number
85541 4785 RR 0001


Pigeon Lake Watershed Association
P.O. Box 1353
Calmar, Alberta
T0C 0V0


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