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Invasive species
Invasive exotic species (IAS) are taking root, even encrusting themselves, in our landscape and in our bodies of water. It's important to be able to recognize them, if only to better control their presence, or even to learn how to protect ourselves from them.
Did you know?
The Quebec government has developed Sentinelle, a tool for tracking invasive exotic species in the province.
If you believe you're in the presence of an IAS, we invite you to photograph and report the species by indicating its location in Sentinelle. In this way, you'll be helping to increase our knowledge of the distribution of IAS in Quebec.
Giant Hogweed
Giant hogweed is an invasive and toxic exotic plant native to Asia. It presents a health and environmental risk, warns the Ministère de l'Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs.
Giant hogweed sap can cause burn-like lesions when in contact with the skin.
Present in several regions of Quebec, including the Eastern Townships, this plant grows particularly along the banks of watercourses, as well as along ditches and roadsides.
Eradication
The municipality of Bolton-Est is responsible for eradicating hogweed. If you observe its presence, do not touch it and contact the Municipality.
Consult the by-law concerning the eradication of Giant Hogweed.
Be careful not to confuse it with another plant
Giant hogweed closely resembles cow parsnip, a plant native to Quebec that is not invasive and poses no toxic risk.
For more information, visit the Quebec government website.
Zebra Mussel
The zebra mussel is an invasive species that, once established in a body of water, is nearly impossible to eradicate.
Fortunately, it is not present in any of Bolton-Est's water bodies.
To preserve them, the Municipality of Bolton-Est has adopted a by-law making it mandatory to wash watercraft at a washing station before changing water bodies. This is an effective method of preventing contamination.
Consult our section on washing stationsFind out more about zebra mussels
Eurasian Watermilfoil
Recognized by its long stems that can form a dense canopy on the water surface, Eurasian watermilfoil is an invasive exotic species (IAS) that is difficult to get rid of once it has been introduced into a body of water.
Washing watercraft as they move from one body of water to another is essential to limit the spread of this IAS.
Consult our section on washing stationsFind out more about Eurasian watermilfoil
Japanese Knotweed
Once it has taken root in riverbanks, gardens or roadsides, Japanese knotweed forms dense colonies that inhibit the growth of other plant species. That's why it's a good idea to learn how to identify this plant in order to combat its presence.
Common reed (phragmites)
Common reed, also known as phragmites, is not an uncommon sight. Although it gives the impression of being part of the landscape, this plant, which can reach heights of three to five meters, is nonetheless undesirable.
Common reed spreads rapidly and forms dense colonies. In so doing, it impedes the growth of other plant species.