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International Flower Bulb Centre
Liliaceae
ALLIUM senescens
Siberian Onion
This entry has yet to be reviewed and approved by L2G editors.
The Siberian onion, a bulbous perennial, is grown for its tiny umbels of cup-shaped pale to mid purple flowers, which bloom from mid to late summer. The flower stalks emerge from a basal clump of short, grassy leaves. Alliums belong to the onion family and thus all have the familiar pungent fragrance when their leaves or stems are crushed. The Siberian onion is native to Europe and northern Asia, where it grows in full sun and well-draining, often sandy soil.
In the fall, plant this bulb two inches deep in well-drained soil; rot can result if planted in wet soil. Once established, alliums tolerate some drought. Reduce watering when the foliage starts to fade. Alliums have a tendency to self-sow; lift and divide the clumps only when they become crowded. Grow this ethereal plant in groups in the mixed border, alpine bed, or rock garden.
10 - 1
4 - 10
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
3"-24" / 7.6cm - 61.0cm (18)
2"-12" / 5.1cm - 30.5cm (8)
Europe, Asia
Neutral
Well Drained
Loam, Sand
Drought
Medium
Drought Tolerant, Average Water
Showy
Purple
Green
Yellow Green
No
Yes
Single
Matte
Alpine, Cutflower, Mixed Border, Rock Garden / Wall
Hummingbirds, Butterflies
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