Helping You Become a More Successful Gardener
Gerald L. Klingaman
Schubert's Onion, Tumbleweed Onion
Few alliums can match the stellar, celestial majesty of the gigantic flowers Schubert's Onion produces in late spring. Its enormous, delicate, radial umbels of starry silvery purple flowers can reach the size of a soccer ball. The flower stalks in the head are of different lengths, giving the spidery blooms even more depth and interest. This hardy perennial bulb originates from the Mediterranean and Central Asia.
The large oniony bulb of this allium produces a basal clump of bright green, lance-shaped leaves in spring. These have a pungent, oniony fragrance when crushed. The giant flowerheads are produced in late spring or early summer and consist of an umbel of many six-petaled, starry flowers of luminescent pale purple. The flowers are great for cutting. Only one will fill a vase. After flowering and fruit set, the foliage will die back to the ground until the following spring.
Grow this unique ornamental onion in full sun and well-drained, sandy loam. It should be planted in fall to a depth of 6 to 8 inches (15 to 20 cm.). Reduce watering when the foliage starts to fade. Plant this dramatic beauty in groups in a large mixed border or rock garden.
1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Bulb or Corm or Tuber
Full Sun, Partial Sun
1'-2' / 0.3m - 0.6m
12"-15" / 30.5cm - 38.1cm
Late Spring, Early Summer
Europe, Mediterranean, Asia
Purple, Lavender, Silver
Green, Yellow Green
Cutflower, Mixed Border, Rock Garden / Wall
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