Perennial Cornflower

Centaurea montana

Native to:
Austria, Baltic States, Belgium, Czechia-Slovakia, France, Germany, Italy, Netherlands, NW. Balkan Pen., Poland, Russia, Spain, Switzerland

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Asteraceae
Genus:
Centaurea
Species:
Centaurea montana
USDA Symbol:
CEMO

Growth Characteristics

Life Cycle:
Annual
Growth Habit:
Forb/herb
Height:
76 cm
Light Requirements:
Full Sun
Drought Tolerance:
Medium
Bloom Months:
may,jun,jul
Bloom Colors:
blue, purple, violet

Wildlife Benefits

Bees:
★☆☆☆☆ Documented bee visitation (GBIF)
Butterflies & Moths:
★☆☆☆☆ Documented Lepidoptera association (GBIF)

Garden & Ecology Notes

Wildlife Value:
bees, butterflies
Deer Resistant:
Yes

Soil Requirements

Soil Type:
rich, well-drained loamy soil
pH:
6.0 - 7.5 (slightly acidic to neutral)
Drainage:
excellent drainage required
Moisture:
dry to moderate
Notes:
native to mountainous regions, prefers open, sunny areas

Propagation & Germination

Stratification:
None required
Germination Time:
14–28 days
Notes:
Seeds germinate readily at 65-70°F without pretreatment. Light may improve germination rates.

The above propagation data sourced from Claude AI

ORGHPS Germination Guide: Sow @ 20C. Germinates within 3 months.

Source: Ontario Rock Garden & Hardy Plant Society