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.

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Take Action

Prevention is the best approach.

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Learn about best practices



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:

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