Ozark Bluestar

(Amsonia illustris)

Ozark Bluestar (Amsonia illustris)

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Climate Requirements

Precipitation 39" - 48"
High Temp. 89°F - 94°F
Low Temp. 20°F - 36°F

Summary

Amsonia illustris, commonly known as Ozark Bluestar, is a deciduous perennial herb native to the central United States, particularly thriving in moist meadows, prairie-like settings, and along stream banks. It typically grows to a height of 2-3 feet (0.6-0.9 meters) and a width of 1-2 feet (0.3-0.6 meters). The plant features narrow, lance-shaped leaves that turn a striking yellow in the fall, adding seasonal interest. In late spring to early summer, clusters of small, star-shaped, pale blue flowers bloom, providing a soft, subtle display of color.

Ozark Bluestar is valued for its low maintenance requirements, drought tolerance once established, and the charming blue flowers that attract pollinators such as butterflies. It is often used in borders, native plant gardens, and as part of naturalistic plantings. For optimal growth, it prefers full sun to part shade and adapts to a variety of soil types, though it performs best in soils with good drainage. While generally pest and disease-free, it can occasionally suffer from rust or leaf spots.CC BY-SA 4.0

Plant Description

  • Plant Type: Herb
  • Height: 2-3 feet
  • Width: 1-1.5 feet
  • Growth Rate: Moderate
  • Flower Color: Blue
  • Flowering Season: Spring
  • Leaf Retention: Deciduous

Growth Requirements

  • Sun: Full Sun, Part Shade
  • Drainage: Medium

Common Uses

Bee Garden, Bird Garden, Butterfly Garden, Deer Resistant, Groundcover, Hummingbird Garden, Low Maintenance

Natural Habitat

Moist meadows, prairie-like settings, and along stream banks

Other Names

Common Names: Shining Blue Star

Scientific Names: Amsonia illustris, Amsonia tabernaemontana var. illustris

GBIF Accepted Name: Amsonia tabernaemontana var. illustris (Woodson) J.K.Williams