Mountain Bluet - Centaurea montana

Description: A native of Europe, brought to North America as an ornamental. Has blue lacecap flowers with rose anthers at the ends of the stems, and grayish-green wooly foliage. Also known as Perennial Coneflower and Bachelors Button. Adaptable to both dry or moist soils and is considered to be drought tolerant. Grows at a fast rate and a single plant can live for up to 15 years.

Type: Herbaceous Perennial

Habitat and Impacts: Occasionally escapes from cultivation; open, disturbed areas in shrub-steppe, forests, and along roadsides.

Method of Spread: Flowers contain both male and female organs, it is therefore self-pollinating. This plant is a self-seeder and spreads by underground stolons as well.

Location: Isolated patches in the Canim Lake, Forest Grove, West Quesnel, and Red Bluff areas.

Management Options:

Mechanical: Small infestations can be handpulled or dug-out when plants are young; making sure the whole root ios removed as new seedlings can regenerate from root fragments.

Chemical: Picloram, 2, 4-D, Glyphosate, Aminopyralid, and Clopyralid can all be used based on label requirements. Chemical treatments are most effective when plants are still actively growing (before flowering).

Biological: None available, but can be affected by aphids, leaf hoppers, rust, aster yellows, and stem rot.

CCCIPC Priority & Treatment Strategy: Not prioritized at this time (Fall 2010). CRD staff are treating all sites found.

Treatment Options:

Local Level: Handpulling small sites, herbicide for larger sites.
Landscape Level: Herbicide.

Mountain Bluet plant

Mountain Bluet flower

Mountain Bluet Infestation


Invasive species profile taken from the Cariboo Chilcotin Coast Invasive Plant Committee Invasive Plant Regional Strategic Plan

Page last modified: October 30, 2018 09:44:02 PDT