Amsonia

Amsonia tabernaemontana

• Position: full sun
• Soil: moist. but well-drained soil
• Rate of growth: average
• Flowering period: May to July
• Hardiness: fully hardy
  
  Dense clusters of star-like, ice-blue flowers appear from late spring to midsummer on graceful, arching stems above long, dark green leaves. A lovely, clump-forming perennial that looks good in the middle of a sunny border.
  
  
• Garden care: Divide congested plants in spring.