Invasive plants kill native plants and destroy Coquitlam's beautiful natural habitat. We need your help to stop the introduction and spread of garden plants that can be harmful to people, animals and ecosystems.
Invasive plants harm the environment.
Invasive plants are non-native plants that were introduced to our environment through seeds, cuttings, garden plants, etc. They spread aggressively and take over the natural environment. They push out native plants, including endangered species, and destroy habitat for fish, birds and other wildlife. They can also cause erosion and silt problems in creeks and impact aquatic creatures. Invasive plants are expensive to control and eradicate. Some, like Giant Hogweed, are even dangerous to human health. Quite simply, they are Bad Seeds.
Read Coquitlam's Invasive Plant Management Strategy for more information.
Are you interested in becoming a Bad Seed volunteer? It’s easy — just show up to one of our Bad Seed events.
If you're a group of 10 or more, please contact firstname.lastname@example.org to register in advance. Smaller groups and individuals do not need to register.
Please bring a water bottle and dress for the weather and in clothes that can get dirty, including close-toed shoes. We'll provide snacks, light refreshments, tools and gloves.
Giant Hogweed is a non-native invasive plant recently found in Coquitlam. Giant Hogweed poses a serious threat to human health and the environment. The clear sap found in its stem and hairs can result in severe burns and blistering. Children have used the large, hollow stems as pea shooters and telescopes resulting in burns to the mouth and/or eyes. If sap enters the eyes, it can cause temporary or permanent blindness.
Staff are monitoring public lands for signs of Giant Hogweed and are asking for the community's help to identify and eliminate Giant Hogweed in Coquitlam.
Please report Giant Hogweed in Coquitlam, by using the Online Hogweed Reporting Form or by contacting:
Parks, Recreation and Culture
- Very tall, reaching up to 5 metres
- White flower heads reach up to 1.5 metres in diameter, bloom in mid August
- Leaves are shiny and large with coarse, jagged edges
- Stalks have purple spots or streaks and stiff bristly hairs
- Typically grows on riverbanks, ravines, vacant lots or along roads, but can also occur on residential property
Removal and Disposal of Hogweed
If you find Giant Hogweed on your property, it needs to be removed as per the City's Noxious Weed Bylaw No. 4181, 2010.
- It is best to let a professional remove this plant
- CAUTION - If you are going to remove the plant yourself, always wear protective, waterproof clothing, gloves and safety goggles and follow Work Safe BC instructions on their safety bulletin and video.
- Dispose of all plant parts in double-bagged kraft paper bags and place in Green Can for curbside collection.
- Do not transfer soil from within four metres of the plant as the soil may contain Giant Hogweed seed.
- Continue to monitor the area for several years.
- If you are exposed to Giant Hogweed, wash the affected area immediately, keep it out of the sun and seek medical advice.
Parks Customer Service
For any concerns or enquiries, please contact us: