Allium caeruleum
Blue Globe Onion
- Height
- 40–60 cm
- Bloom period
- May - Jun
- Flower colour
- Blue
- Light
- Full sun
- Hardiness
- Zone 4–8 (USDA) hardy to approx. -34 °C · suitable for Dutch winters (the Netherlands is zone 8)
- Soil
- Well-drained
Description
Rare blue allium with small, dense flower spheres. One of the few truly blue species.
Care tips
Multiplies slowly. Protect young plants from slugs.