Welcome to the diverse world of flowering alliums, a plant
family of perhaps four hundred species that includes the familiar onion,
garlic, and chives. Planting alliums for their flowers is not a new idea.
By Elizabethan times, the giant purple onion was featured as an ornamental
garden cover crop. Ornamental alliums bloom in yellow, white, beige, purple,
pink and blue. Bloom times vary from spring to fall depending on the species.
Two of the largest and most spectacular alliums bloom in June and make
excellent fresh and dried cut flowers. Star of Persia is perhaps the most
spectacular. Up to 80, star-shaped flowers are carried in open eight-inch
flower clusters. When in bloom, the flowers resemble a lavender to lilac-colored
burst of fireworks.
Turkestan alliums are known for their round, dense, three-to-five-inch
flower clusters in colors that vary from beige, to pink, to reddish-lilac.
Their large flowers on short stems contrast well with their broad, bluish-green
leaves.
For the rock garden, try Ostrowsky onion. In June, up to five stems
with bright, carmine pink flowers appear only four inches above the ground.
Golden garlic and lily leek are more subtle. Their bright yellow flowers
in open clusters on ten-inch stems add a delicate touch to June gardens.
For Colorado mountain gardeners in hardiness zone two or three, try
June-blooming Allium caeruleum. The blue-globe onion produces cornflower-blue
blooms on two-inch round clusters on one-foot stems.
Fall is the best time to purchase and plant these versatile ornamental
plant bulbs for blooms next year. Many local garden centers and nurseries
stock a variety of alliums.
