Allium sphaerocephalon
Has received the RHS Award of Garden Merit. (2016)
Good for pollinators
Allium sphaerocephalon is a striking allium, bearing dense green drumstick-style flower heads which mature to maroon-red. It’s a great choice for growing in a mixed herbaceous border among ornamental grasses, or gravel gardens. It also works well in a pot. [Gardener’s World]