Centaurea cyanus
Family: Asteraceae
Common names: BLUEBOTTLE, CORNFLOWER, KNAPWEED, STAR THISTLE
Native to: Northern Temperate Regions
Sentiment: single blessedness
Plant
Type: annual
Form: erect
Max height: 3 feet
Max width: 0.48 feet
Flower
blue/green
Leaf
green
Horticulture
Attracts wildlife: adult butterfly, bird, specific butterfly species
Bird species attracted to plant: chickadee, northern cardinal, nuthatch, titmice
Plant part consumed by birds: seeds
Exposure: sun
Propagates by: seed
flowers in spring
flowers in summer
Soil type: wide range
USDA Zones: zone 2 -50 f, zone 3 -40 f, zone 4 -30 f, zone 5 to -20 f, zone 6 to -10 f, zone 7 to 0 f, zone 8 to +10 f, zone 9 to +20 f
Temp. range: -50 to +30 °F
Water: moderate
Butterflies that feed on this plant
