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Guignardia bidwellii

Stinkweed, formally known as Thlaspi arvense, is a winter annual weed that’s prolific, poisonous and difficult to control. Also called Frenchweed...

Canadian growers aren’t alone — dandelions are a nuisance for farmers worldwide1. One dandelion alone can produce about 2,500 very mobile seeds...

Sow thistle is a perennial weed that can grow in a wide variety of environmental conditions and is currently found in all Canadian provinces...

Redroot pigweed is an annual broadleaf weed that has developed resistance to Group 2 herbicides in Western Canada, and Group 5 resistance in the U...

Many consider fall the best time to take on hard-to-kill weeds, especially perennials and winter annuals. For perennials, a post-harvest burn-off...

Downy and Japanese brome are winter annual grasses that can be found across Canada. Downy brome is originally from the Mediterranean and...

Septoria leaf spot is a common leaf disease causing premature defoliation. Though it overwinters on infected leaves and twigs, wind and rain can...

When’s the best time to control tough perennials like dandelion and Canada thistle? We weighed the pros and cons of both options in this...

Lamb’s Quarters are annual broadleaf weeds commonly found throughout Canada and the U.S. Often one of the first to emerge in the spring, this...