Maltese Star-Thistle

Centaurea melitensis

Native to:
Algeria, Azores, Baleares, Canary Is., Cape Verde, Corse, Egypt, France, Greece, Italy, Kriti, Libya, Madeira, Morocco, NW. Balkan Pen., Portugal, Sardegna, Selvagens, Sicilia, Spain, Tunisia

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Asteraceae
Genus:
Centaurea
Species:
Centaurea melitensis
USDA Symbol:
CEME2

Growth Characteristics

Life Cycle:
Annual | Biennial
Growth Habit:
Forb/herb
Height:
100 cm
Light Requirements:
Full Sun
Drought Tolerance:
High
Bloom Months:
apr,may,jun,jul,aug
Bloom Colors:
yellow

Reported Fauna Sightings

Butterflies:Orange Sulphur (Colias eurytheme)

Garden & Ecology Notes

Wildlife Value:
birds
Deer Resistant:
Yes

Soil Requirements

Soil Type:
poor, sandy, well-drained soil
pH:
6.0 - 8.0 (neutral to slightly alkaline)
Drainage:
excellent drainage required
Moisture:
dry to moderate
Notes:
thrives in disturbed areas and roadsides

Propagation & Germination

Stratification:
None required
Germination Time:
7–21 days
Notes:
Seeds germinate readily in fall or spring with adequate moisture. Light may improve germination.

The above propagation data sourced from Claude AI

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

Source: Ontario Rock Garden & Hardy Plant Society