German garlic

German garlic, Allium senescens subsp. glaucum, is a charming, low-growing ornamental onion ideal for rock gardens or front of borders in the UK. Its attractive twisted, glaucous-blue foliage forms neat clumps, topped with pretty pink-purple globes of flowers in late summer. It's a fantastic late-season nectar source for pollinators.

Sun: Full sun.

Soil: Well-executed, somewhat poor but well-drained.

Hardiness: H7 — below −20°C.

Flowering: Aug, Sep.