From the ArcaMax Publishing, Features Newsletter:
http://www.arcamax.com/news/features/s-160358-456512
Plant type: Annual, Interior Plant
USDA Hardiness Zones: UKN
Height: 6" to 18"
Spread: 8" to 10"
Exposure: partial shade partial sun to full sun
Bloom Color: Blue, Pink, Purple, White
Bloom Time: Early summer, Early fall, Late summer, Late spring, Mid
summer, Mid spring
Leaf Color: Green
Growth Rate: average
Moisture: moist
Soil Condition: Acidic, Loamy, Neutral, Sandy, Well drained
Form: Rounded
Landscape Uses:
Border, Container, Massing, Rock garden, Specimen
Special Features:
North American native, Attracts butterflies, Suitable for cut
flowers, Seldomly reblooms