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 revealing
pale purple undersides and resemble round lavender balls.
One plant may have more than a dozen blooms 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.
Species is highly variable in appearance. The butterfly
is a Dainty Sulphur.
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