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Category
Perennials
Water Requirements
Drought-tolerant; suitable for xeriscaping
Average Water Needs; Water regularly; do not overwater
Sun Exposure
Sun to Partial Shade
Light Shade
Foliage
Herbaceous
Foliage Color
Height
6-12 in. (15-30 cm)
12-18 in. (30-45 cm)
Spacing
12-15 in. (30-38 cm)
Hardiness
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)
USDA Zone 10a: to -1.1 °C (30 °F)
USDA Zone 10b: to 1.7 °C (35 °F)
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Where to Grow
Danger
N/A
Bloom Color
Blue-Violet
Medium Purple
Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds
Flowers are fragrant
Bloom Size
Bloom Time
Mid Spring
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall
Other details
Soil pH requirements
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
Patent Information
Patented
Propagation Methods
By dividing the rootball
From herbaceous stem cuttings
Seed Collecting
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed
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