Reading Time: 2 minutes Tens of thousands of weevils have been pouring into Alberta from Montana — and producers are clamouring for more. “It’s a biological control and it’s been going great,” said Rachael Nay, conservation agriculture extension co-ordinator with the West-Central Forage Association. The association began the project to import stem-mining weevils four years ago as a way […] Read more
There’s a reason why stem-mining weevils are the priciest livestock in Alberta
The insects are mowing down Canada thistle across the province, and attracting lots of eager buyers
Perennial sow thistle costs farmers across Alberta
Noxious Weeds: Perennial sow thistle causes yield loss and acts as a host for pests
Reading Time: 2 minutes Often found in high densities across Alberta, perennial sow thistle seems to be a noxious weed that doesn’t quit. Not only does this pest cause significant yield loss in many crops, but it’s a host for several plant pests that attack economically important crops such as alfalfa, winter wheat and canola — just to name […] Read more
Devil’s trumpet is a potentially deadly invader
Noxious Weeds: Jimsonweed
Reading Time: < 1 minute Although its exact origin is unknown, devil’s trumpet — otherwise known as jimsonweed — is found in many countries around the world in both agricultural and ornamental settings. Introduced to this province as a contaminant of agricultural seed, this smelly weed is under review by the provincial Agriculture Ministry and it has been recommended to […] Read more
Another invader from the buttercup family
Cultivation is not successful and no chemicals are registered for control
Reading Time: < 1 minute Yellow clematis, a perennial vine related to the buttercup family, can become quite invasive if proper precautions are not taken. In Alberta, it has been designated as noxious for this reason. Often purchased, however, from gardening stores as a bedding plant, this weed can spread by wind which can take the seeds far beyond the […] Read more
A weed that prospers on degraded pasture
Noxious Weeds: Hoary alyssum
Reading Time: 2 minutes Thought to be brought to North America as a seed contaminant from Europe, hoary alyssum is toxic to horses and other livestock. It has a variety of life cycles depending on site and weather conditions, which makes this weed tricky to control. A prohibited noxious weed in Alberta, this pest can be easily identified. Hoary […] Read more
Keep watch for this potential new invader
Noxious Weeds: Puncturevine
Reading Time: < 1 minute So far uncommon to Alberta, puncturevine has all the makings of a potential headache to you and me, alike. What started as an annual herb in southern Europe has started spreading into Canada (in British Columbia and Ontario). Like most other weeds, this plant prefers areas of disturbed, bare ground and grows as a summer […] Read more
This quick-spreading weed gets an early start
Noxious weeds: Canada thistle
Reading Time: < 1 minute Spring brings lovely native flowers, but also noxious weeds. The aggressive perennial Canada thistle is a favourite of disturbed soils of all types. It starts sending shoots from horizontal roots to the surface of soil around mid-April, with flowers to follow in mid-June and continuing throughout the summer. Easy to distinguish from other weeds, this […] Read more
A wolf in sheep’s clothing
Noxious Weeds: Baby's breath
Reading Time: < 1 minute Many people think of baby’s breath as a cute, delicate filler flower found in rose bouquets. The real plant found in the Prairies couldn’t be further from this image. This weed has a taproot that can reach the astonishing depth of four metres, and it can grow as wide as 41 centimetres in circumference. And […] Read more
This tenacious invader is hard to defeat
Reading Time: < 1 minute White cockle has strikingly lovely white flowers and the fuzzy, almost furry opposite leaves give it a distinctive appearance. It is a member of the Pink family — it looks like pinking shears gave the five petals their deep notches. The Pink family includes chickweed and night flowering catchfly — catchfly is often mistaken for […] Read more
Canada thistle: Meet your worst nightmare
Every rancher hates this hard-to-control weed, but stem mining weevils just eat them up (from the inside)
Reading Time: 3 minutes Every year, Canada thistle takes a big bite out of the productivity of Alberta forage and grasslands. But an increasing number of producers is biting back — in a wholly natural way. In late August, the West-Central Forage Association will once again import hundreds of cartons of little black bugs from an insectary in Montana. […] Read more
Cyber-Savvy Farmer
