Hardiness: USDA Zone 4a: to -34.4 °C (-30 °F) USDA Zone 4b: to -31.6 °C (-25 °F) USDA Zone 5a: to -28.8 °C (-20 °F) USDA Zone 5b: to -26.1 °C (-15 °F) USDA Zone 6a: to -23.3 °C (-10 °F) 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)
Sun Exposure: Full Sun
Danger: Pollen may cause allergic reaction
Bloom Color: Medium Blue
Bloom Time: Mid Spring Late Spring/Early Summer
Other details: Drought-tolerant; suitable for xeriscaping
Soil pH requirements: 6.1 to 6.5 (mildly acidic) 6.6 to 7.5 (neutral) 7.6 to 7.8 (mildly alkaline)
Patent Information: Non-patented
Propagation Methods: From seed; direct sow outdoors in fall
Seed Collecting: Allow seedheads to dry on plants; remove and collect seeds Properly cleaned, seed can be successfully stored
On Oct 9, 2004, smiln32 from Oklahoma City, OK (Zone 7a) wrote:
The beautiful purplish-blue Camassia is native to our northern plains and mountain states, and figured prominently in Native American history. The lilies carpet open areas in the northern plains, and the bulbs were used for both food and medicine. Supposedly, Lewis and Clark collected some of the bulbs on one of their expeditions west.
On Mar 6, 2003, Wildwood from Rainier, WA (Zone 8a) wrote:
Camassia quamash constituted a major portion of plant foods by northwestern Native Americans. It was eaten raw, roasted, boiled, fried, or was dried and stored. It naturalizes readily on prairies with heavy soil that are wet in winter and dry in summer with low grass cover. Reproduces from seed only that is dispersed from pods in summer, taking 3-4 years from seed to bloom. Washington camas emerges in early March, blooms in May and June, seeds in July, and is dormant by September. Bulbs are easily moved when dormant. Does best in a natural setting where it won't be mowed until after seeding.
This plant has been said to grow in the following regions:
Townsend, Delaware Indian Valley, Idaho Mount Prospect, Illinois Cochituate, Massachusetts Framingham, Massachusetts Galesburg, Michigan Lambertville, New Jersey Cornwall On Hudson, New York Maywood Park, Oregon Salem, Oregon Chimacum, Washington Kalama, Washington Olympia, Washington Renton, Washington Seattle, Washington Spokane, Washington Walnut Grove, Washington