A picture of a Brown knapweed

Brown knapweed

Centaurea jacea

Full Sun
Moderate watering
Frost Hardy

H7

RHS hardiness

-20°C

Minimum temperature

Expected size

Height
Spread

1.5m

Max

50cm

Min

Flowering

  • spring
  • summer
  • autumn
  • winter

More images of Brown knapweed

A photo of Brown knapweed
A photo of Brown knapweed

Brown knapweed Overview

A perennial herb growing to 1.5cms. The leaves are variable but generally ovate. The purple or white florets are borne on clustered capitulums in summer.

Common problems with Brown knapweed

How to propagate Brown knapweed

Division

You can propagate by seeds or division in the autumn or spring.

Seed

Other uses of Brown knapweed

Grown for the flower heads that each have a thistle like centre surrounded by a ring of slender ray petals. Suitable for coastal conditions.