Lifespan: Biennial to perennial.
Growth rate: Rapid.
Mature Size: 6-18" high.
Flowers: One-inch wide, narrow white to violet rays, yellow centers.
Flowers fold up in late afternoon or in shade revealing pale purple undersides
and resemble round lavender balls. One plant may have more than a dozen blooms
open at one time.
Bloom: Sporadically, winter, spring, summer, fall, depending on local climate.
Fruit: Bristly seeds.
Leaves: Long, narrow, dull green.
Stems: No thorns. Long, narrow, dull green.
Wildlife: Attracts butterflies.
Toxic / Danger: No.
Origin: Western United States, Canada and Mexico.
Cultivation and Uses
USDA hardiness zones: 2-10.
Heat tolerant: Yes.
Drought tolerant: Yes.
Sun: Full sun to part shade..
Water once established: Once a month.
Soil: Well drained, dry, low organic content, pH 6.1-7.8
(slightly acidic to slightly alkaline).
Propagation: Seed, root division. Easily reseeds.
This species is highly variable in appearance. The butterfly in the picture
is a Dainty Sulphur.
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