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Category
Herbs
Perennials
Water Requirements
Requires consistently moist soil; do not let dry out between waterings
Sun Exposure
Full Sun
Foliage
Herbaceous
Foliage Color
Bronze
Height
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)
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Where to Grow
Danger
Handling plant may cause skin irritation or allergic reaction
Bloom Color
Pale Green
Light Blue
Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds
Bloom Size
Bloom Time
Mid Summer
Late Summer/Early Fall
Other details
Soil pH requirements
6.6 to 7.5 (neutral)
Patent Information
Non-patented
Propagation Methods
By dividing the rootball
From seed; direct sow outdoors in fall
Seed Collecting
Allow seedheads to dry on plants; remove and collect seeds
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