3 x Extra large Allium Gladiator Bulbs: Allium Gladiator one of the largest flowering Allium, these Bulbs make huge flowers upto as much as 20cm across, on tall sturdy stems upto 100cm in height. These are extra large size bulbs size 20/24. Allium bulbs are best planted between September and December, but can if necessary go in as late as January, but ideally before the frosts arrive, they will flower in April or May depending on conditions.
Allium should ideally be planted before the worst of the winter weather arrives. Plant in loose soil approximately 10cm deep at distances of approximately 20cm, and not less than 15. They can be left to grow wild in pots, borders and rockeries.