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Invasive Plants

Orange Hawkweed

Hawkweeds (Hieracium spp.) are perennial plants with 14 non-native species recorded in BC, and are difficult to identify among the 8 native hawkweed species. One of the 14 non-native species, orange hawkweed (Hieracium…Learn more

Oxeye Daisy

Oxeye daisy (Leucanthemum vulgare) is a short-lived perennial that decreases forage for wildlife, decreases local plant biodiversity, and may compromise vegetative ground cover due to its growth form that results in exposed soil.…Learn more

Parrot’s Feather

Parrot’s feather (Myriophyllum aquaticum) is an aquatic perennial that is currently impacted several areas within BC. This species is known to out-compete and replace native aquatic vegetation with its dense…Learn more

Perennial Pepperweed

Perennial Pepperweed (Lepidium latifolium) is an invader of irrigated pastures, grasslands, rangelands and native meadows, causing the most concern in the Kootenay and Thompson agricultural regions. Plants can grow to 2…Learn more

Policeman’s Helmet

The common names Policeman's Helmet, Bobby Tops, Copper Tops, and Gnome's Hatstand all originate from the flowers being decidedly hat-shaped. Himalayan Balsam and Kiss-me-on-the-mountain arise from the plant originating in the Himalayan mountains. Ornamental jewelweed refers to its cultivation as an…Learn more

Purple Loosestrife

Purple loosestrife (Lythrum salicaria) is a woody half-shrub, wetland perennial that has the ability to out-compete most native species in BC’s wetland ecosystems. Dense stands of purple loosestrife threaten plant and animal diversity.…Learn more

Queen Anne’s Lace

Queen Anne's lace (Daucus carota) is an invasive biennial herb that smells like a carrot and grows 3-4' tall, blooming from May to October. This plant shows an umbrella-shaped flower…Learn more

Rush Skeletonweed

Rush skeletonweed (Chondrilla juncea) is a perennial and considered noxious under the BC Weed Control Act. Found on rangelands, roadsides, and disturbed habitats at mid-elevations in the dry grassland zone, infestations occur in…Learn more

Russian Olive

Russian olive (Elaeagnus angustifolia) is a relatively small ornamental tree which has recently impacted several regions in BC. First introduced for its silver leaves and ability to withstand cold BC…Learn more

Scentless Chamomile

Scentless chamomile (Matricaria maritima) is an annual to short-lived perennial. Considered noxious under the BC Weed Control Act, scentless chamomile is commonly found on low to mid-elevation sites, along roadsides, drainage ditches, fence…Learn more

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