Common Names: blue throatwort
Size: 2 ft. high, 3 ft. wide.
Flowers: Small bluish violet fragrant flowers in clusters, blooms for a long time over summer; leaves are narrow, sharply toothed, and dark green.
Uses: Accent, color, tough landscapes, cut flowers, in heat.
Wildlife: Butterfly pollinated.
Soil: Tolerates a variety; leans toward medium (loamy) soils. Should be well-drained.
Water: Medium; likes damp places.
Sun: Full sun to some shade.
Pruning: Remove spent blooms to stimulate more. Cut off old stems in spring.
Pests & Diseases: Generally pest and disease free
Notes: If seeds are planted early in the year, it will bloom that year. T. c. ‘Devotion Blue’ is another colorful cultivar. Hardy to 15° F.