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Parrot's Feather

A popular aquatic garden plant that spreads with water currents, animals, boats/trailers and fishing gear. Dense stands can stagnate water, and increase breeding grounds for mosquitoes learn more »

Zebra/Quagga Mussels

These tiny freshwater mussels clog drains, damage infrastructure, and are very costly to control/eradicate learn more »

Giant Hogweed

A towering toxic invasive plant with WorkSafe BC regulations learn more »

Invasive Species Research Conference

Turning Science into Action! Co-hosted by Thompson Rivers University and the Invasive Species Council of BC. learn more »

European Fire Ant

A tiny ant with a toxic sting learn more »

Purple Loosestrife

An aggressive wetland invader that threatens plant and animal diversity learn more »

Orange Hawkweed

Also yellow, these invasive plants replace native vegetation along roadsides, and threaten areas not yet reforested learn more »

Japanese Knotweed

Grows aggressively through concrete, impacting roads and house foundations learn more »

Spotted Knapweed

A single plant spreads rapidly with up to 140,000 seeds per square metre learn more »

Scotch Broom

An evergreen shrub that invades rangelands, replaces forage plants, causes allergies in people, and is a serious competitor to conifer seedlings learn more »

Field Scabious

Species
Knautia arvensis

Field scabious (Knautia arvensis) is a perennial plant that competes with forage and pasture land, and is also found along roadsides at mid-elevations of the province. Once established, is very difficult to eradicate. Field scabious is considered regionally noxious under the BC Weed Control Act, and is found in the Bulkley-Nechako, Kootenay-Boundary, and Thompson-Nicola regions.

Field scabious is an escaped ornamental known for attracting butterflies. Plants are sturdy with a well-formed taproot and long leafless stalks that form large violet to pink, clover-like flowers. Stems are upright and hairy with coarsely toothed, feather-shaped leaves. 

Most seeds fall from the plants (a single plant can produce up to 2,000 seeds), but others can be spread by birds and human activities.

A few native and ornamental alternatives to plant instead of field scabious include: Columbines; Common Harebell; Masterwort; Hybrid Yarrow; and Bee Balm. Read more about these alternatives in the Grow Me Instead booklet for BC.

Gallery: Field Scabious