Amsonia hubrichtii

Blue Star-Threadleaf

Photo Credit: Walters Gardens


Amsonia hubrichtii

Blue Star-Threadleaf

One of the best native perennials for fall color. Billowy plants with green, threadleaf foliage are topped with clusters of pale blue, star-shaped flowers in spring. Trimming plants back after flowering helps to maintain a rounded mound shape. No serious pests or diseases; adaptable to sand or clay soils.

Plant Details

  • Zone: 4 - 9
  • Height: 24-36
  • Spread: 24-36
  • Exposure: Full Sun, Part Shade
  • Soil Moisture: High Water Needs, Low Water Needs, Moderate Water Needs
  • Drought tolerant: Yes, Once Established
  • Bloom time: Early Summer, Late Spring
  • Foliage Color: Gold Shades, Green Shades
  • Flower Color: Blue Shades
  • Fragrant: No
  • Good Cut Flower: No
  • Native: Native Species
  • Deer resistant: Yes
  • Rabbit resistant: No
  • Bee-friendly: No
  • Attracts butterflies: Yes
  • Attracts hummingbirds: No
  • Groundcover: No
  • Roy Diblik Favorite: No

Plant Details

  • Zone: 4 - 9
  • Height: 24-36
  • Spread: 24-36
  • Exposure: Full Sun, Part Shade
  • Soil Moisture: High Water Needs, Low Water Needs, Moderate Water Needs
  • Drought tolerant: Yes, Once Established
  • Bloom time: Early Summer, Late Spring
  • Foliage Color: Gold Shades, Green Shades
  • Flower Color: Blue Shades
  • Fragrant: No
  • Good Cut Flower: No
  • Native: Native Species
  • Bee-friendly: No
  • Deer resistant: Yes
  • Rabbit resistant: No
  • Attracts butterflies: Yes
  • Attracts hummingbirds: No
  • Groundcover: No
  • Roy Diblik Favorite: No

Grower Information

  • PowerPlug Size(s): 32s
  • Optimal Planting Time: Late Summer-Fall
  • Retail Sales Window: Spring, Summer
  • Moisture in Production: Average
  • Requires Shade in Production: No
  • Vernalization Required for Bloom: Yes
  • Vernalization Beneficial: No