trefle.io · Taken Oct 12, 2018 by joselu (cc-by-sa)
Asteraceae
Brown knapweed
Centaurea jacea
Also known as Centaurea jacea f. alvarensis, Rhaponticum jacea, Centaurea jacea var. genuina, Centaurea jacea
Native Plants · Wildflower · Pollinator · Drought-Resistant · Purple-Flowers · Meadow · Low-Maintenance · Self-Seeding · Naturalized
Brown knapweed is a tough perennial wildflower that thrives in poor soils with minimal care. Plant in full sun to partial shade and water sparingly as it prefers dry conditions once established. This pollinator-friendly plant self-seeds readily and provides long-lasting purple blooms throughout summer.
Growing conditions
The details behind the basics
- Daily light
- 6 hours
- Watering
- Water moderately, allow soil to dry between waterings · Every 10-14 days
- Maintenance
- Low
- Soil
- sandy loam
- Soil pH
- 6.5–7
- Temperature
- -30°F to 95°F
- Cycle
- Perennial
- Propagation
- Seed
Hardiness
USDA 4a-10b
Form & growth
Mature size and habit
- Mature height
- 2 ft – 5 ft
- Spread
- 2 ft
- Spacing
- 12 in apart
- Growth rate
- Moderate
- Root depth
- Deep
- Flowers
- No
- Foliage
- Medium
Ecology & origin
Where it belongs and what it brings
- Native to
- Albania, Algeria, Altay, Austria, Baltic States, Belarus, Belgium, British Columbia, Bulgaria, California, Central European Rus, Connecticut, Corse, Czechoslovakia, Delaware, Denmark, East European Russia, Finland, France, Germany
- Attracts
- Bees, Butterflies
Sources: trefle, usda
More Centaurea
Related plants from the same genus
Buy this plant
No nurseries currently list it
No nursery lists Brown knapweed right now.