Amsonia ‘Storm Cloud’

The Amsonia ‘Storm Cloud’ is an exceptional cultivar of the bluestar plant, noted for its striking dark stems, lush foliage, and starry blue flowers. This perennial adds a unique texture and color contrast to garden borders and native plant gardens, with the added benefit of being low maintenance and drought tolerant once established.

See below for some key features and information.

 

 

 


Description
  • Height and Spread: Grows to about 24 to 30 inches tall and wide, forming a mounded clump that adds structure and volume to garden plantings.
  • Leaves: Features olive-green leaves that emerge on near-black stems in spring, creating a dramatic look even before the plant blooms. In the fall, the foliage turns a brilliant yellow, providing late-season interest.
  • Flowers: Produces clusters of light periwinkle blue, star-shaped flowers in late spring to early summer. The blooms are attractive to pollinators and add a delicate texture to the garden.
  • Growth Habit: This cultivar maintains a neat, mounded habit, making it an excellent choice for adding consistent form to mixed borders and perennial beds.
Habitat and Cultivation
  • Adaptability: While Amsonia species are native to North America, ‘Storm Cloud’ is specifically bred for enhanced ornamental appeal and garden performance. It is hardy in USDA zones 4 through 9, making it suitable for a wide range of climates.
  • Soil and Sunlight: Prefers well-drained soil and can thrive in full sun to partial shade. Full sun promotes the best flowering and fall foliage color, while partial shade is tolerated in hotter climates.
  • Watering: Established plants are notably drought-tolerant, making ‘Storm Cloud’ a good choice for water-wise gardens. Regular watering is beneficial during the first growing season to establish a deep root system.
Care and Maintenance
  • Pruning: Minimal pruning is required. Deadheading is not necessary, as the plant does not readily self-seed, and the faded flowers have their own aesthetic appeal. If desired, plants can be cut back in late winter to early spring before new growth begins.
Landscaping Use
  • Amsonia ‘Storm Cloud’ is ideal for mass plantings, borders, and native or naturalized gardens, where its seasonal changes can be appreciated. It adds a unique texture and color contrast to the garden, especially effective when planted in groups.
  • Its drought tolerance makes it suitable for xeriscaping, and its fall color is an excellent addition to autumn landscapes. The plant’s structure and durability also make it a good choice for public gardens and urban settings.

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