Pastures are vulnerable to common tansy, which can poison livestock.

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


Winter annuals, such as stinkweed, need to be controlled 
post-harvest.

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

Spotted knapweed thrives in harsh conditions.

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