I love these and the bees love them too. I was pleased to see that they even did well in shadier parts of the garden (not deep shade) though they flowered later, but then that just makes the joy last longer.

Botanical name: Allium sphaerocephalon
Other names: Roundhead leek, Round-headed allium, Allium drumsticks, Drumstick Allium
Genus: Allium
Species: A. sphaerocephalon – A. sphaerocephalon is a bulbous perennial with strap-like, mid-green basal leaves and tall stems bearing small round or oval pink to purple-red flowerheads in summer

Deciduous
Flower: Reddish-purple, Pink in Summer
Foliage: Mid-green in Spring; Mid-green in Summer
Habit: Erect, Spreading
Specific diseases: Downy mildew , Onion rot

Propagation methods: Division, Seed
Height 0.9m Spread 0.1m after 2-5 years.
Suggested uses: Architectural, Beds and borders, Cottage/Informal, Flower Arranging, Gravel, Underplanting

Cultivation: Grows in fertile, well-drained soil. Add grit to clay soils to improve drainage.
Soil types: Chalky, Clay, Loamy, Sandy (will tolerate most soil types)
Soil drainage: Moist but well-drained, Well-drained
Soil pH: Acid, Alkaline, Neutral
Light: Full Sun
Aspect: North, South, East, West
Exposure: Sheltered
Hardiness: Hardy (H4)