Allium giganteum

Also Known As

Giant Allium

Plant type

perennial, bulb / corm / tuber

size

H: 24"-48"
W: 4"-8"

planting zones

4a-10b

Allium giganteum plant details

Allium giganteum is a broadleaf deciduous perennial bulb / corm / tuber with green foliage. In spring and summer purple flowers emerge. Features grassy texture. Attracts bees and butterflies making it an excellent addition to pollinator gardens. Grows well with sun - mostly sun and regular - low water. Drought tolerant once established. Prefers to be dry in summer. Does well in average, gritty, rich and well-drained soil. A good option if you're seeking something verticillium wilt resistant.

CHARACTERISTICS OF Allium giganteum

Plant type: perennial bulb / corm / tuber
Plant family: amaryllidaceae
Foliage: deciduous green
Mature size: 4 IN - 8 IN - wide, 24 IN - 48 IN - tall
Flowers: purple blooms in spring and summer
Uses: award-winning, border plant, container plant, cutting garden, rock garden

GROWING CONDITIONS for Allium giganteum

USDA Zones: 4a - 10b
Sun exposure: sun - mostly sun
Watering frequency: regular - low
Resistant to: deer and rabbit, verticillium wilt
Soil needs: average, gritty, rich and well-drained

Nursery contributed plant descriptions

Under normal growing conditions, this may well be the tallest of the large flowering ornament onions. Allium Giganteum reaches heights of 5 to 6 feet and the tight ball purple globe flowers are known to grow 6-8" in diameter. Statement-making to be sure!

By: Leafari

Ornamental onions offer intriguing spherical or egg-shaped inflorescences comprised of hundreds of tiny flowers. Tightly formed, round, softball-sized inflorescence filled with small lilac purple florets; plant among perennials to hide dying foliage; blooms in late spring with Dutch Iris and Eremurus and painted daisies. Native from Afghanistan to Pakistan and north into Russia.