Invasive Plant

Bachelor’s Buttons

Centaurea cyanus

About This Species

Also known as cornflower, Bachelor’s button is common in “wildflower” mixes. This invasive plant produces large amounts of seed and can easily invade dry meadows, fields, and grasslands.

How to Identify

Plants are 30- to 90-cm tall. It is narrow growing with silvery-green leaves and single bright blue, purple, pink or white flowers. The flowers are dark around the edges, with a tattered fringe at the flower tips.

Report an Invasive Species

Use the app

Help us track and defeat invasive species.

Report through this website

Use our form to tell us what you’re seeing and where.

CONTACT INFORMATION

SPECIES INFORMATION

Click or drag files to this area to upload. You can upload up to 3 files.
Please include photos of the suspected species to help potential identification by experts.
Please be specific and give us an address if possible.
//

Take Action

Prevention is the best approach.

Play Clean Go

PlayCleanGo

Learn about best practices

Plantwise

Plantwise

Learn about best practices

Avoid planting wildflower mixes especially if Centaurea cyanus or other Centaurea species are listed on mixes. Not all mixes list every species in the mix. If this is the case, do not use the wildflower mix for planting.

A few non-invasive alternatives to plant instead of Bachelor’s Buttons include:

  • Purple Coneflower (Echinacea purpurea)
  • Bluehead Gilia (Gilia capitata)
  • Blue Flax (Linum lewisii)
  • Nodding Onion (Allium cernuum)
  • Showy Daisy (Erigeron speciosus)

Go Further

Identify

Help protect BC from Invasive Species.