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A picture of a Knapweed

Knapweed

Centaurea bella

Also known as

Bachelor’s Button, Evergreen Cornflower

Full Sun
Moderate care
Light watering
Frost Hardy

6a

USDA zone

-23°C

Minimum temperature

Expected size

Height
Spread

30cm

Max

45cm

10cm

Min

10cm

Flowering

  • spring
  • summer
  • autumn
  • winter