WITH GIANT PURPLE globes and metallic pink sparklers, ornamental onions (Allium) blooming in the spring garden are a spectacular sight. But there are more stars in the Allium galaxy than those ...
Bulbous perennial with ribbed stems 60-150cm tall and 4-6 broadly strap-shaped, grey-green, basal leaves 30-45cm long, hairy beneath. In early summer, bears tightly packed umbels, up to 10cm across, ...