Blue Allium, Blue Globe Onion
|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.
This very hardy ornamental onion has deep cornflower blue flower heads, 2 inches across, June through summer. Good for fresh or dried arrangements. Gather and plant mini bulbs at flower stalk ends in autumn to propogate.
Attributes - Allium caeruleum
Plant Type: Bulb
Bloom Season: Late Spring through Mid Summer
Flower Color: Blue
Height: 1 ft. to 2 ft.
Width: 8 in.
Sunlight: Full Sun
Climate: Zones 3, 4, 5, 6, 7, 8, 9, 10
Notes: Cut Flowers, Showy Flowers. Susceptible to Powdery Mildew, Root Rot, Thrips.
Allium aflatunense, Allium cernuum, Allium christophii, Allium cyrillii, Allium giganteum, Allium macleanii, Allium moly, Allium neopolitanum, Allium ostrowskianum, Allium roseum, Allium schubertii, Allium sphaerocephalon, Allium tanguticum