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Category
Perennials
Water Requirements
Drought-tolerant; suitable for xeriscaping
Sun Exposure
Full Sun
Sun to Partial Shade
Foliage
Grown for foliage
Evergreen
Provides Winter Interest
This plant is fire-retardant
Smooth
Foliage Color
Height
12-18 in. (30-45 cm)
Spacing
12-15 in. (30-38 cm)
15-18 in. (38-45 cm)
Hardiness
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)
USDA Zone 11: above 4.5 °C (40 °F)
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Where to Grow
Can be grown as an annual
Danger
Handling plant may cause skin irritation or allergic reaction
Bloom Color
Blue-Violet
Bloom Characteristics
Flowers are good for drying and preserving
This plant is attractive to bees, butterflies and/or birds
Bloom Size
Bloom Time
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall
Other details
May be a noxious weed or invasive
Soil pH requirements
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
Patent Information
Patented
Propagation Methods
By dividing the rootball
By dividing rhizomes, tubers, corms or bulbs (including offsets)
Self-sows freely; deadhead if you do not want volunteer seedlings next season
Seed Collecting
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed
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