Amaryllidaceae
Allium douglasii
Allium douglasii
Also known as Allium hendersonii
Flowering Plants · Native Plants · Native Bulb · Pacific Northwest · Allium · Wild Onion · Amaryllidaceae · Rock Garden · Perennial · Pollinator · Oregon · Washington
Douglas's onion is a charming native bulb from the Pacific Northwest that thrives in part shade with average moisture and rocky or well-drained soils. Plant bulbs in autumn and water regularly through the spring growing season, reducing water as the foliage dies back in summer. This low-maintenance perennial is ideal for native plant gardens and rock gardens in Oregon and Washington.
Growing conditions
The details behind the basics
- Daily light
- 4 hours
- Watering
- Water moderately, keeping soil evenly moist during the growing season · Every 7-10 days
- Maintenance
- Low
- Soil
- loam
- Soil pH
- 6–7.8
- Temperature
- -40°F to 95°F
- Cycle
- Perennial
Hardiness
USDA 3a-9b
Form & growth
Mature size and habit
- Mature height
- 12 in – 4 ft
- Spread
- 3 ft
- Spacing
- 6 in apart
- Growth rate
- Fast
- Root depth
- Medium
- Flowers
- Purple
- Foliage
- Green · Medium
Ecology & origin
Where it belongs and what it brings
- Native to
- Oregon, Washington
- Attracts
- Bees, Butterflies
Sources: trefle, usda
More Allium
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