Reading Time: < 1 minute Flowering rush has been spotted in a few locations in Alberta, including an infestation on Lake Isle, located in Lac St. Anne and Parkland counties. Flowering rush is a perennial of freshwater wetlands that is native to Africa, Asia and Europe and was introduced to North America as an ornamental plant species. It is a […] Read more

Keep watch for this wetland invader

Don’t give this weed the nod
Reading Time: < 1 minute Nodding thistle is found in pockets around the province, but mainly in southern Alberta. This noxious weed is a prolific seed producer — a single flower can produce up to 1,200 seeds and a single plant up to 100,000 seeds. It can be recognized by the solitary large red to purple flowers at the end […] Read more

Don’t let this invader take hold
Reading Time: < 1 minute Leafy spurge is common throughout Alberta due to its ability to adapt to a variety of soil types through its extensive creeping root system. Stems are smooth and arranged in clumps, can grow up to a metre tall, and contain a milky latex. When it comes into contact with skin, the latex can cause irritation […] Read more

This poisonous invader is growing in numbers
Reading Time: < 1 minute Introduced from Europe in the 1600s as an ornamental species, common tansy (sometimes called tangee) has been spotted across central Alberta and its numbers have been on the rise in recent years. The weed is particularly threatening in pasture and riparian habitats, but can also be found in disturbed soils and flower beds. Most livestock […] Read more

Now’s the time to attack winter annual weeds
Many winter annuals are often too well established or already flowering once spring arrives
Reading Time: 2 minutes Conditions are favourable this year for some excellent post-harvest weed control, says a provincial crop specialist. “Winter annuals are weeds that germinate in the fall or late fall, go through the winter in a rosette form, and go to seed quickly once spring comes,” said Harry Brook. Common winter annuals include stinkweed, shepherd’s purse, scentless […] Read more

Don’t let this on your rangeland
Reading Time: < 1 minute Spotted knapweed has been reported in many areas of the province, especially ones with lots of vehicle traffic. Calgary, major highways, and border crossings are just a few areas with high densities of this prohibited noxious weed. The plant skeletons get caught in vehicle undercarriages, contributing to its spread. It also thrives in disturbed sites […] Read more