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The Plant Guide

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Ornamental onion ‘Globemaster’

Allium 'Globemaster'

AL-ee-um

Allium ‘Globemaster’ is a true showstopper, growing to about 32 inches tall. Very large, majestic purple spheres up to 8 inches across bear numerous star-shaped, deep lilac flowers in May and June.

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

  1. theresenadeauuboldi 07/26/2015

    I purchased a Globemaster Allium at a nursery in a pot. I moved it to another larger pot with good soil. Can I still plant in the ground? Thanks

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