Prevention through proper grazing management is the best way to keep absinthe wormwood out of pastures.

You won’t raise a glass to this invasive weed

Noxious Weeds: Absinthe wormwood

Reading Time: < 1 minute A tough, semi-woody perennial plant native to Europe and Asia, absinthe wormwood typically grows in stems and forms in a clumping habit. The most distinguishing feature of the plant is its finely divided leaves combined with a silvery-grey colour. Absinthe wormwood also has a very strong and distinct odour which is very similar to sage. […] Read more

Both inspections and monitoring are being stepped up this year in the ongoing war to keep invasive mussels — which may be just 60 kilometres from the border — out of Alberta’s waterways.

The threat of invasive mussels draws ever closer to Alberta

Water officials on high alert after positive samples for larval mussels 
were found in two nearby Montana reservoirs last year

Reading Time: 4 minutes Lakes closed to watercraft; shores fouled with sharp shells and a rotting mollusk smell; millions of tax dollars going to clean up irrigation and hydro-electric infrastructure — that’s the future if quagga or zebra mussels find their way into the province. For decades, Alberta has been protected by a buffer of mussel-free provinces and states […] Read more


Common buckthorn, which has been found in two Alberta locations, can easily outcompete native species.

This tree is also a noxious weed

Reading Time: < 1 minute Common buckthorn, otherwise known as European buckthorn, has been found in two locations in Alberta — in Edmonton along the North Saskatchewan River and in Stettler County. It was originally brought to North America from Eurasia as an ornamental, but soon spread throughout the continent. High seed production and excellent tolerance to Canada’s climate allow […] Read more

People transporting canoes, kayaks, and paddleboards must also stop at inspection stations, such as this one at Jumping Pound west of Calgary.  

Authorities up efforts in the battle to keep out invasive mussels

More inspections, tougher enforcement, and lots of education key to 
keeping Alberta waterways clear of quagga and zebra mussels

Reading Time: 3 minutes The provincial government and irrigation districts are ramping up their efforts to keep invasive quagga and zebra mussels out of Alberta. Along with more watercraft inspections, the province is also stepping up enforcement — and boaters who fail to stop at an inspection station face a fine of up to $100,000 or 12 months in […] Read more


The barbs on the seed heads of Woolly Burdock allow them to easily attach to fur or clothing.

Noxious weed found throughout Alberta

Noxious Weeds: Wooly Burdock

Reading Time: < 1 minute Woolly burdock is found throughout Alberta and will grow in most soil types. It prefers moist, loamy, and well-drained soils which are in direct sunlight. This noxious weed is commonly found on disturbed sites, but has also been found growing in gardens for herbal use. Woolly burdock can only reproduce by seed, but is self-fertile […] Read more

Ox-eye daisy is sometimes sold in wildflower mixes, but it is an invasive weed that can ruin a pasture.

Ox-eye daisy not just a pretty wildflower

Reading Time: < 1 minute Ox-eye daisy is a noxious weed that has been spotted throughout Alberta, especially in central and southwest areas of the province. It commonly grows along roadsides, waterbodies, fields and pastures, forest openings, disturbed areas, and urban areas. This weed looks similar to scentless chamomile and is often not perceived as an invasive plant because it […] Read more





Invasive species — such as this quagga mussel — pose a major threat to the aquatic ecosystem.

Western Canada unites in fight against invasive species

Joint agreement will boost fight to keep zebra 
and quagga mussels out of Alberta

Reading Time: < 1 minute A joint agreement among Alberta, British Columbia, Saskatchewan, Manitoba, and Yukon tightens the grip on invasive species. The Inter-Provincial Territorial Agreement for Co-ordinated Regional Defence Against Invasive Species is a step towards better co-ordination among jurisdictions on both prevention and co-ordinated response if invasive species are detected in Western Canada. The initial scope of this […] Read more

Quagga mussels were first found in Lake Mead in 2007 and the population is now in the trillions. The lake, located east of Las Vegas, is the largest reservoir in the United States.

Keeping province free of invasive mussels

Zebra and quagga mussels could quickly devastate Alberta’s irrigation infrastructure

Reading Time: 2 minutes Zebra and quagga mussels are small freshwater, clam-like species that pose a significant threat to Alberta’s waterways and irrigation systems. “The concern with zebra and quagga mussels is that they multiply very quickly and can attach and accumulate on any submerged surface in the water, and could clog up water-related infrastructure such as irrigation pipelines […] Read more