Certain plants are illegal.
The government calls them ‘noxious’ weeds. These are invasive alien species that are a threat to agriculture and to natural ecosystems. Vegetable louts, they can elbow aside native species and can infiltrate agricultural crops. The result? Ecosystems lose biodiversity, and farmers need to use more herbicides. Let’s not let our gardens be a contributing factor to the spread of these plants.
Municipalities are concerned–visit the web sites for the cities of Edmonton and Calgary for what you can do to recognise and fight weeds. It is especially important for those of us who have a more relaxed style of naturalistic gardening–there have been cases of fuss-budget neighbours using the weed control act as a weapon against what they feel are slovenly gardens. Don’t let it happen to you.
The Alberta Invasive Plants Council has information on weeds and photographs on how to identify them. Go there now…you may be surprised to find that criminals that are lurking in your garden.
Some ornamental plants are not listed as invasive, but have the potential to spread. Avoid these plants, especially if you live on land that borders any natural areas. Even the Shasta daisy (Leucanthemum x superbum), a horticultural cultivar, can revert and hybridise with the ox-eye daisy, a noxious weed. If your Shastas are self-seeding, it is (ob)noxious.
The Alberta Weed Control Act governs noxious weeds. Weed Control Regulation lists the following: (Note that ‘prohibited noxious weeds‘ must be destroyed, while ‘noxious weeds’ must be controlled–i.e don’t let them go to seed or spread)
read more »