How to - Pests & Diseases

Know what you grow

By
Tara Nolan

Spotting invasive plants may be harder than you think: Discover tips to investigate suspicious plants


What can we do?
Invasive plant borders are regional, not political, so think twice before bringing a plant back from your trip (that includes sneaking a roadside plant into your trunk) to the Rockies if you live in the Maritimes. A plant that isn’t invasive in one province may not have the natural pests and diseases to control it in another.

The most important thing gardeners can do is to be aware of what they are buying at the garden centre. Some nurseries inadvertently sell invasive plants and the Invasive Plant Council is working hard to help stop the spread of these species. They recommend the following before buying:

  • Find out if a plant is a “fast spreader” or a “vigorous self-seeder” in your planting zone. These are warning signs the species may be invasive.
  • Investigate if the plant is known to be invasive elsewhere around the world, or in other parts of Canada.
  • Find out if there is an alternate plant available that is non-invasive in your area.

Eliminating invasive species in your garden
If you do have an invasive species in your garden, dig it all up and dispose of it in the garbage—not the compost, where it has a chance to survive.

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