Family: Asteraceae (ass-ter-AY-see-ee) (Info)
Genus: Psilostrophe (sy-loh-STROH-fee) (Info)
Species: cooperi (koo-PER-ee) (Info)
Synonym:Riddellia cooperi
 One vendor has this plant for sale.
Category:
Groundcovers
Perennials
Shrubs
Height:
6-12 in. (15-30 cm)
12-18 in. (30-45 cm)
18-24 in. (45-60 cm)
Spacing:
18-24 in. (45-60 cm)
24-36 in. (60-90 cm)
36-48 in. (90-120 cm)
Hardiness:
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
USDA Zone 10a: to -1.1 °C (30 °F)
USDA Zone 10b: to 1.7 °C (35 °F)
USDA Zone 11: above 4.5 °C (40 °F)
Sun Exposure:
Full Sun
Sun to Partial Shade
Light Shade
Danger:
Unknown - Tell us
Bloom Color:
Bright Yellow
Bloom Time:
Mid Spring
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall
Mid Fall
Late Fall/Early Winter
Blooms repeatedly
Foliage:
Velvet/Fuzzy-Textured
Other details:
Average Water Needs; Water regularly; do not overwater
Soil pH requirements:
Unknown - Tell us
Patent Information:
Unknown - Tell us
Propagation Methods:
From seed; direct sow outdoors in fall
Seed Collecting:
Bag seedheads to capture ripening seed
Allow seedheads to dry on plants; remove and collect seeds
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