Family: Asteraceae (ass-ter-AY-see-ee) (Info)
Genus: Echinops (EK-in-ops) (Info)
Species: ruthenicus (ru-THEN-ih-kus) (Info)
Cultivar: Platinum Blue
Synonym:Echinops ritro subsp. ruthenicus
 One vendor has this plant for sale.
2 members have or want this plant for trade. Category:
Perennials
Height:
24-36 in. (60-90 cm)
36-48 in. (90-120 cm)
Spacing:
15-18 in. (38-45 cm)
Hardiness:
USDA Zone 3a: to -39.9 °C (-40 °F)
USDA Zone 3b: to -37.2 °C (-35 °F)
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)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
Sun Exposure:
Sun to Partial Shade
Danger:
Parts of plant are poisonous if ingested
Handling plant may cause skin irritation or allergic reaction
Bloom Color:
Medium Blue
Bloom Time:
Mid Spring
Late Spring/Early Summer
Foliage:
Grown for foliage
Silver/Gray
Blue-Green
Other details:
This plant is attractive to bees, butterflies and/or birds
Drought-tolerant; suitable for xeriscaping
Average Water Needs; Water regularly; do not overwater
Self-sows freely; deadhead if you do not want volunteer seedlings next season
Soil pH requirements:
Unknown - Tell us
Patent Information:
Unknown - Tell us
Propagation Methods:
By dividing the rootball
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; stratify if sowing indoors
From seed; sow indoors before last frost
Seed Collecting:
Unknown - Tell us
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