Also known as round-headed leeks or drumstick alliums, alliums Sphaerocephalon produce umbells of small round to egg-shaped flowers that will start off green before slowly turning reddish-purple from the top down as they age. Plant densely in the border or meadow to create an eye-catching display. Alternatively, try interlacing with grasses.
Plant around 10 cm deep in fertile, well-drained soil in full sun — allowing around 75-100 bulbs per square meter.
Always unpack on arrival and store in a cool place until ready to plant.
Potential problems, pests and diseases:
Generally, drumstick alliums do not suffer from any serious diseases or pest problems.