It is native to much of eastern North America, from Canada to the Gulf of Mexico, and grows well in woodlands, meadows, and along roadsides.
Delphiniums are tall, stately plants with spires of blue flowers. While they prefer well-drained soil and full sun they will tolerate some light shade in zones 3 to 7.
English bluebells are spring-flowering plants that produce clusters of small blue blooms. They prefer partial to full shade and moist, well-drained soil and grow best in zones 5 through 8.
Siberian iris has beautiful blue-purple flowers and grass-like foliage. They prefer moist soil and full sun to partial shade, are low-maintenance.
Is there a blue hosta? Yes! Blue hosta has blue-gray foliage that can provide a beautiful contrast to other plants in the garden in zones 3 through 9.
Balloon flowers are a charming perennial plant that grows in Zones 3-9. Named for their distinctive balloon-like buds that burst open to reveal stunning star-shaped flowers in shades of blue, pink, and white.
False indigo flowers grow in Zones 3-9. They are known for their striking blue-purple flowers that bloom in late spring to early summer.
The blue wonder catmint is a hardy perennial with blue flowers and gray-green foliage, growing in zones 3 through 8.