Allium dichlamydeum

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Allium dichlamydeum
Allium dichlamydeum
Allium dichlamydeum Bulbs

Botanical Name: Allium dichlamydeum
Common Name: Coastal Onion

Clumps of grass-like leaves with flowers in the Spring. The stems are green-brown, and the plant omits an onion smell when crushed. This form of onion is toxic and should not be eaten.

Plant Family: Amaryllidaceae

Plant Type: Bulb

Height by Width: 1' H

Growth Habit: Clumps of grass-like leaves

Deciduous/Evergreen: Summer dormant

Growth Rate: Fast

Sun Exposure: Full sun to part shade

Soil Preference: Prefers dry, clay soils on or near sea cliffs

Water Requiremenets: Dry summer dormancy

Cold Hardy to: 2,400'

Flower Season: Spring

Flower Color: Rose to red

Endangered? Not Listed

Distribution: North Coast, n Central Coast

Natural Habitat: Northern Coastal Scrub, Mixed Evergreen Forest

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Care and Maintenance

Plant the base of the bulb at a depth three times the height of the bulb. Stop watering once the leaves begin to turn brown, but keep leaves on the plant until they turn completely brown.


Other Names


  • Harlow, Nora and Kristin Jakob. Wild Lilies, Irises, and Grasses: gardening with California Monocots. Berkeley and Los Angeles, CA: University of California Press. 2003.