Invasive Plants

Invasive plants are non-native plants that have been introduced into our environment that adversely affect local habitat. Many invasive plants have been introduced to British Columbia without their natural predators and pathogens that would otherwise keep their populations in check.

Invasive plants can have negative impacts on:


  • Lower property value
  • Increase landscape management costs in parks and natural areas
  • Cause property and infrastructure damage


  • Crowd out native plants
  • Effect soil fertility and disturbance
  • Disturb ecosystem balance
  • Destroy wildlife habitat
  • Reduce soil stability & water quality


  • Endanger humans, pets, livestock and wildlife
  • Reduce aesthetics of an enjoyable landscape
  • Reduce functional use of outdoor space

Top Invasive Plants:

Invasive Knotweeds
Invasive Knotweeds
English Ivy
English Ivy
Himalayan Blackberry
Himalayan Blackberry
Scotch Broom
Scotch Broom


English Ivy
Policeman's Helmet
Policeman’s Helmet
English Holly
English Holly
Giant Hogweed

Giant Hogweed

Giant Hogweed is an invasive plant and it can pose a serious threat to human health and natural ecosystems. The sap of Giant Hogweed causes phytophotodermatitis in humans, which can result in burns and blisters. Giant Hogweed has been observed in Port Coquitlam and the City wants to ensure it does not become a widespread community concern.

What Can You Do About Invasive Plants?

  • Learn about the potential invasiveness of new species before you seed or plant them
  • Increase awareness as to the identification of invasive plants and their impacts
  • Educate yourself and your neighbours about invasive plant species in your community
Stop the Spread
  • Know what you grow and avoid planting aggressive species
  • Dispose of waste appropriately at your local landfill or compost if appropriate for that species
  • Contain or remove invasive species in your yard
  • Control weeds growing underneath bird feeders
  • Do not put invasive cuttings in your compost
  • Stay on established trails while hiking
  • Volunteer with stewardship groups holding invasive species removal events in your community
Plant Alternatives
  • Use native plants in your yard in place of invasive plants
  • Choose plants wisely and grow appropriate non-invasive alternatives. Be suspicious of plants promoted as “fast spreaders” or “vigorous self-seeders.