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Invasive Plants

Giant hogweed

Giant hogweed (Heracleum mantegazzianum) is a perennial and currently distributed in the Lower Mainland, Fraser Valley, Gulf Islands, and central to southern Vancouver Island. Giant hogweed has...Learn more

Gorse

Gorse (Ulex europaeus) is a spiny, perennial evergreen shrub, considered noxious under the BC Weed Control Act, and thrives on sunny clearings with...Learn more

Hairy Cat’s Ear

Hairy cat's ear (Hypochaeris radicata) is a perennial that infests pastures, meadows, roadsides, river banks, lawns and disturbed open areas as well as legume and seed...Learn more

Himalayan Balsam

Himalayan balsam (Impatiens glandulifera) is an exotic-looking annual that has pink, helmet-shaped flowers (also known as "policeman’s helmet”), rapid growth, and an entertaining mode of...Learn more

Himalayan Blackberry

Himalayan blackberry (Rubus armeniacus) is mostly a biennial plant, growing on disturbed sites, along roadsides and rights-of-ways, in pastures, along river and stream banks, fresh-water wetlands,...Learn more

Hoary Alyssum

Hoary alyssum (Berteroa incana) is an annual to short-lived perennial. Considered regionally noxious under the BC Weed Control Act, hoary alyssum is most...Learn more

Hoary Cress

Hoary cress (Cardaria draba) is a perennial plant that invades hay fields, rangeland meadows and along roadsides, competing with native vegetation. It can be found on open,...Learn more

Hound’s-Tongue

Hound’s-tongue (Cynoglossum officinale) is a biennial to short-lived perennial, and is considered noxious under the BC Weed Control Act. Hound&rsquo...Learn more

Knotweeds

Knotweeds (Polygonum spp.) are invasive perennials, with four species found in British Columbia: Japanese knotweed (Fallopia japonica); Bohemian knotweed (Fallopia x bohemica);...Learn more

Marsh Plume Thistle

Marsh plume thistle (Cirsium palustre) is a biennial and considered regionally noxious under the BC Weed Control Act. The majority of sites are...Learn more

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