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Round-headed leek
Common Name: Round-headed leek
Genus: Allium
Species: sphaerocephalon
Skill Level: Beginner
Exposure: Full sun
Hardiness: Hardy
Soil type: Well-drained/light, Sandy
Height: 90cm
Spread: 8cm
Time to divide plants: March to May
An attractive species, easy to grow in full sun, bearing dense, round flower-heads that open green and turn deep clover-red in summer. Try planting it in the gravel garden where it will thrive in the well-drained conditions.
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