previous
  • Stylish Shady Containers
    Stylish Shady Containers
  • In Pursuit of the Perfect Potting Shed
    In Pursuit of the Perfect Potting Shed
  • Homegrown / Homemade
    Homegrown / Homemade
  • Indeterminate or Determinate Tomatoes?
    Indeterminate or Determinate Tomatoes?
  • Garden Confidential: A Plant Walks into a Bar
    Garden Confidential: A Plant Walks into a Bar
  • 6 Tips for Weed Control
    6 Tips for Weed Control
  • Comfortable Alfresco Dining
    Comfortable Alfresco Dining
  • Make a Succulent Topiary
    Make a Succulent Topiary
  • Building a Compost Bin
    Building a Compost Bin
  • Slideshow: Beautiful Clematis
    Slideshow: Beautiful Clematis
  • Pretty in Pink
    Pretty in Pink
  • Containers as Focal Points
    Containers as Focal Points
  • Lawn Alternatives
    Lawn Alternatives
  • Fragrant Plants for Pathways
    Fragrant Plants for Pathways
  • Thoughts From a Foreign Field
    Thoughts From a Foreign Field
  • NEW Video Series: There's a Better Way
    NEW Video Series: There's a Better Way
  • Elephant's Ears
    Elephant's Ears
  • Plant an Easy-to-Water Strawberry Jar
    Plant an Easy-to-Water Strawberry Jar
  • Dwarf Citrus Trees
    Dwarf Citrus Trees
  • Plants that Spark!
    Plants that Spark!
  • Mulch for a Healthy Garden
    Mulch for a Healthy Garden
  • Designing with Curved Terraces
    Designing with Curved Terraces
  • Fast-Growing Trees for Impatient Gardeners
    Fast-Growing Trees for Impatient Gardeners
  • Colorful Selections for Shade
    Colorful Selections for Shade
  • Save Money by Growing Your Own
    Save Money by Growing Your Own
next
Find a plant:

OR Browse All Plants


Allium 'Globemaster' (Ornamental onion)

Allium 'Globemaster' Photo/Illustration: Chris Curless

(Based on 2 user reviews)

Rate this plant

Plant Showcase - from our advertisers


Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11
Botanical Name: Allium 'Globemaster' AL-ee-um Common Name: Ornamental onion Genus: Allium
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.
 Care: Provide full sun and well-drained, average to dry soil.
 Propagation: Sow seed in spring in containers or in situ. Divide clump-forming plants in spring.
 Problems: Bulb rot in damp conditions. Onion fly and thrips.
Height 3 ft. to 6 ft.
Spread 6 in. to 12 in.
Growth Habit Clumps
Growth Pace Fast Grower
Light Full Sun Only
Moisture Dry to Medium
Maintenance Low
Characteristics Attracts Butterflies; Showy Seed Heads
Bloom Time Early Summer; Late Spring; Spring; Summer
Flower Color Purple/ Lavender Flower
Uses Beds and Borders
Style Cottage Garden, Rock Garden
Seasonal Interest Summer Interest, Fall Interest
Type Bulbs

Plants you might also like

Allium caeruleum Allium caeruleum
(Blue globe onion) Be the first to rate this plant
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This plant produces dense clusters of bright blue flowerheads up to 1 inch wide. Its leaves clasp its stem and die back before flowering.
Allium moly and cvs. Allium moly and cvs.
(Golden garlic, Lily leek) Be the first to rate this plant
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

For long-lasting bright yellow flowers that sparkle in midsummer, try Allium moly. It is robust, hardy, and an excellent cut flower, naturalizing and increasing happily in the sun in most garden soils. The cultivar 'Jeannine' flowers earlier and produces larger umbels on sturdier stems.
Allium senescens Allium senescens
(Ornamental onion) Be the first to rate this plant
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This plant has thin, strap-like foliage that tends to twist. It produces up to 30 long-lasting, 12- to 40-inch-tall pink or lilac flowers in mid- to late summer.
Allium senescens var. glaucum Allium senescens var. glaucum
(Circle onion) Be the first to rate this plant
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This plant's silver-blue leaves swirl like a cowlick. It produces flowers that are lollipop-shaped, pink with bright yellow accents and about 16 inches tall.
Camassia leichtlinii ssp. suksdorfii 'Blue Danube' Camassia leichtlinii ssp. suksdorfii 'Blue Danube'
 Be the first to rate this plant
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

Spikes of violet, star-shaped flowers top stems reaching from 2 to 4 feet in late spring. The species is native to western Oregon. 'Blue Danube' would be beautiful in a border, meadow, or containers. Camassia make good cut flowers.