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Allium giganteum

Giant Onion, Giant Allium

Related to Onions, Garlic and Leeks, Ornamental Onions are grown for their dense clusters of flowers, which look like lollipops. Height varies from 6 inches to 5 feet. Use for rock gardens, naturalizing and flower borders. Smaller-growing varieties are good in containers. Excellent cut flowers. Leaves smell like onions. Use fully-ripened stalks in dried arrangements. Many are sun-loving and hardy to Zone 4 if mulched in winter. They are easy to grow. Plant bulbs in fall no more than 2 to 4 inches deep, depending on bulb size. Bulbs prefer sandy soil and will rot without excellent drainage. For most species, when foliage yellows after flowering, gradually withhold water. Susceptible to all pests of edible Onions, but usually trouble free.
Allium giganteum, Giant Onion, Giant Allium
Star-shaped flowers mass in a dense globe up to 6 inches across. Hollow, green leaves are 1 to 3 feet long.

Attributes - Allium giganteum

Plant Type: Herb

Bloom Season: Early Spring through Early Summer

Flower Color: Lavender, White

Foliage: Deciduous

Height: 4 ft. to 6 ft. 6 in.

Width: 3 ft.

Sunlight: Full Sun, Partial Sun

Climate: Zones 6, 7, 8, 9, 10, 11

Notes: Thrives in Wet Soil. Container Plants, Cut Flowers, Showy Flowers. Susceptible to Black Spot, Root Rot.

Related Plants

Allium aflatunense, Allium caeruleum, Allium cernuum, Allium christophii, Allium cyrillii, Allium macleanii, Allium moly, Allium neopolitanum, Allium ostrowskianum, Allium roseum, Allium schubertii, Allium sphaerocephalon, Allium tanguticum
 
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