Amsonia hubrichtii

Threadleaf Blue Star, Arkansas Blue Star

Herbaceous Perennial

"In late spring and early summer a constellation of powdery sky-blue flowers burst forth atop the fine feathery foliage of Amsonia hubrichtii. Thread-leaf bluestar has thin, light green needle-like foliage. As these long-lived and reliable plants mature in midsummer they give the impression of billowing clouds melding with the surrounding landscape. One of the best perennials for fall color, it shines with a radiant bright yellow color before going dormant for the winter. This long lived perennial prefers a rich well-drained soil and regular summer watering. Plant it in full sun for the best flowering and brightest fall color. Be patient with new young plants, often they can look a little straggly and forlorn and may take a few years to fill out. To help plants establish give them some space to minimize competition. Once they mature they will be long lived and robust, full specimens." —Great Plant Picks

Growing Conditions

Zone: 5, 6, 7, 8

Exposure: Full Sun, Afternoon Sun

Water Needs: Drought-tolerant, Average, Regular / Even


Size: 24 - 30 tall x 24 - 36 wide
Shape / Form: Clumping, Mounding
Foliage Texture: Fine
Foliage Quality: Fine

Features: Attractive Foliage, Drought-tolerant / Water wise, Fall Color, Low Maintenance

Foliage Color: Green
Fall Color: Yellow / Gold

Flower Color: Blue
Bloom Season: Apr, Fall, Jun, May, Spring
Flower Shape: Cluster

Uses and Applications

Landscape Uses: Beds and Borders, Mixed Border
Special Situations: Deer Resistant
Wildlife: Bees, Beneficial Insects, Butterflies, Deer Resistant

More Design Considerations

Season of Interest: Spring, Summer, Fall, Pleasing Seasonal Changes, Three Seasons of Interest
Position / Role: front of border
Plant Behavior: Clumping
Collections: eGardenGo Favorite, Great Plant Pick, Plants That Earn Their Keep

Care and Maintenance

Maintenance Level: low

Plant Combos