Facebook LinkedIn Email Pinterest Twitter Instagram YouTube Icon Navigation Search Icon Main Search Icon Video Play Icon Audio Play Icon Headphones Icon Plus Icon Minus Icon Check Icon Print Icon Note Icon Heart Icon Filled Heart Icon Single Arrow Icon Double Arrow Icon Hamburger Icon TV Icon Close Icon Sorted Hamburger/Search Icon

The Plant Guide

Browse the Full Plant Guide

Blue globe onion

Allium caeruleum

AL-ee-um sir-EW-lee-um

This plant produces dense clusters of bright blue flowerheads up to 1 inch wide. Its leaves clasp its stem and die back before flowering.

CareProvide full sun and well-drained, average to dry soil.

PropagationSow seed in spring in containers or in situ. Divide clump-forming plants in spring.

ProblemsBulb rot in damp conditions. Onion fly and thrips.

  • Genus : Allium
  • Plant Height : 1 to 3 feet
  • Zones : 10, 4, 5, 6, 7, 8, 9
  • Plant Width : 6 to 12 inches
  • Plant Type : Bulbs
  • Moisture : Dry to Medium
  • Bloom Time : Early Summer, Summer
  • Growth Rate : Fast
  • Light : Full Sun
  • Maintenance : Low
  • Characteristics : Showy Seed Heads
  • Plant Seasonal Interest : Summer Interest
View Comments


Log in or create an account to post a comment.

Related Plants

Related Articles

More From the Plant Guide

Winter Interest

Partial Shade

Browse the Full Plant Guide