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Alliaceae
Allium Species, Douglas' Onion, Ornamental Onion
Alliumdouglasii
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Genus
Allium
(AL-ee-um)
Info
Species
douglasii
(dug-LUS-ee-eye)
Info
Synonym
Allium hendersonii
Sun Exposure
Full Sun
Sun to Partial Shade
Foliage
Herbaceous
Height
6-12 in. (15-30 cm)
Spacing
6-9 in. (15-22 cm)
Hardiness
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
Danger
Unknown - Tell us
Bloom Color
Pale Pink
Pink
Rose/Mauve
White/Near White
Bloom Time
Late Spring/Early Summer
Mid Summer
Other Details
Category
Bulbs
Perennials
Water Requirements
Drought-tolerant; suitable for xeriscaping
Foliage Color
Unknown - Tell us
Where to Grow
Unknown - Tell us
Bloom Characteristics
Unknown - Tell us
Bloom Size
Unknown - Tell us
Other details
Unknown - Tell us
Soil pH requirements
Unknown - Tell us
Patent Information
Non-patented
Propagation Methods
By dividing rhizomes, tubers, corms or bulbs (including offsets)
From bulbils
Seed Collecting
Allow seedheads to dry on plants; remove and collect seeds
Regional
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3 members have or want this plant for trade
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