Flower colour: lilac-purple
Flowering period: April-May
Average plant height: 90 cm
Planting depth to base of bulb: 20 cm
Spacing between bulbs: 25 cm
Type of bulb: bulb
Light requirements: full sun to half-shade
Landscape uses: beds, perennial beds, and as cut flowers
This is one of the loveliest ornamental onions, its inflorescence consisting of dozens of small star-shaped flowers united to form a globe-shaped cluster. To achieve a successful visual effect, 10 to 15 bulbs should be planted close together. The narrow blue-green leaves also have a certain ornamental value. 'Lucy Ball' and 'Purple Sensation', both of which are deep purple, are extremely valuable as cultivated hybrids. These alliums will usually naturalise very satisfactorily in climatic zones 4 -7.
The 'Purple Sensation' has been chosen as Flower Bulb of the Year 2009 for England.