Alberta Weed Control Act information

History

The Weed Control Act is one of Alberta's oldest pieces of legislation. It protects citizens from economic and invasive losses caused by weeds. Weedy plants exhibit extreme development of some habit of growth or physiological requirements, such as easy seed dissemination using barbs or hair tufts.

Weedy plants may grow thorns or have growth habits that permit them to take over land areas. They may also show long-lived seed or abundant seed production in conditions adverse to native species or desirable crop plants. Weeds may also have roots that develop shoot buds and new shoots in spite of intensive cultivation.

Uncontrolled plant growth may also interfere with human activities, such as lines of sight at intersections or interference with control devices on rail or utility lines. Excessive plant growth may create a fire hazard as the plants mature.

Government legislation

The Weed Control Act is divided into two main components: the legislation passed by the legislative assembly and the regulations, which allow for consistent enforcement of the Act. The Act is the enabling legislation that defines the actions municipalities in Alberta must take regarding weed control, the methods of service of notices, to whom the notices should be served, and the conditions necessary for appeal.

The Weed Control Act also defines the actions inspectors appointed by Municipalities must take when confronted with weedy plants that are considered either "restricted," "noxious," or "Nuisance" weeds.

Enforcement

The legislation includes enforcement standards for various weed categories. Restricted weeds must be controlled wherever they are found. There is zero tolerance for these species. Noxious weeds are to be issued notices on a discretionary basis, based on the decision of the weed inspector following established unit guidelines.

At present, unit guidelines dictate notices will be issued for stands of Canada Thistle, Toadflax, Scentless Chamomile, and Leafy Spurge. All other plants are treated on a discretionary basis, considering the severity of the weed infestation and the location where the weeds are growing.

The location includes considerations such as the area of the city, its proximity to water and areas for increased spread, and, in the case of natural areas, its value to the inventory.​​​​​

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