An invasive plant is a non-native plant that has the potential to negatively impact the composition, structure and function of native ecosystems. Certain species, such as Giant Hogweed (Heracleum mantegazzianum), also threaten human and animal health and can cause serious economic impacts. While not all non-native plants are considered invasive or harmful, the ones that are can establish quickly in new areas and spread rapidly.
The spread of invasive plants has become a major concern for ecologists, naturalists, residents, and land managers across British Columbia. Their spread is second only to habitat loss as the major cause for our declining biodiversity.
The City of Nanaimo is committed to preventing new invasive plants from becoming established in our parks and controlling invasive plants of a health concern for the public.
Priority Invasive Plants
- Giant Hogweed Information *ALERT*
- Himalayan Blackberry
- English Ivy
- Scotch Broom
- English Hawthorn
- Daphne / Spurge-Laurel
- Knotweed *ALERT*
- Policeman's Helmet / Himalayan Balsam
- Garlic Mustard
- Carpet Burweed
- Giant Hogweed
- Poison Hemlock
What you can do to help
- Report a Weed!
- Volunteer in Parks Program
- Join an "Invasive Plant Attack" during the Fall by participating in a volunteer work party. A great chance to meet new people, get some great exercise, and enjoy the fall season while helping your City Parks. For more info, check out our events planned for Invasive Plant Month.
Where to find more information
- 2016 Invasive Plant Work Parties and Drop Zone
- Coastal Invasive Species Committee
- Invasive Species Committee of British Columbia
- Invasive Alien Plant Program (Province of BC)
- Download the "Report a Weed" Mobile App
- Identify Weeds and Invasive Plants (King County, Washington State)
- Broom Busters