Allium douglasii
Allium douglasii
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.
Care Level
Low
Sun
Partial Shade
Water
Moderate
Growth Rate
Fast
Mature Height
12″ – 48″
Soil
loam
Life Cycle
Perennial
Spacing
6″
Flowers
purple
Watering Schedule
Every 7-10 Days • Water Moderately, Keeping Soil Evenly Moist During The Growing Season
Soil pH
6 – 7.8
Temperature
-40° – 95°F
Mature Spread
up to 36″
Root Depth
Medium
Foliage
Medium
Native to
Attracts
Sources
Data: trefle, usda
No nurseries currently have this species in stock.