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Amsonia hubrichtii (threadleaf bluestar)
Species Distribution Map: Click to enlarge
Map Color Key © 2013 BONAP

Amsonia hubrichtii

threadleaf bluestar or Hubricht's bluestar

A graceful and long-lived native plant with very fine foliage, clusters of steel blue flowers in May and June on an upright, bushy plant. Excellent golden fall color. Thrives in full sun or part shade. No insect or pest problems. Found in Arkansas in 1942 by Leslie Hubricht.

Amsonia hubrichtii LP50 - 50 per flat Availability
Amsonia hubrichtii - 72 per flat Availability
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3 Feet


2-3 Feet


18 Inches

Bloom Color


USDA Hardiness Zone 4-9

threadleaf bluestar Interesting Notes

The Perennial Plant Association's 2011 Perennial Plant of the Year™

"The foliage of A. hubrichtii is feathery, like A. ciliata, but leaves are a little wider and longer. The flowers are light blue and are almost white as temperatures warm up in spring. The early flowers are easily visible, but the foliage tends to cover the later opening flowers. The narrow foliage (less than 1" wide) makes a marvelous display throughout the season, and the golden-yellow spectacle in the fall is second to none among herbaceous plants. Plants have been difficult to locate in the past, but the garden attributes have been recognized by more nursery people, and plants are much more available. Well worth growing." - Allan Armitage, Herbaceous Perennial Plants

Amsonia hubrichtii Growing and Maintenance Tips

Prefers full sun in moist, average or dry soil. Slow to grow at first, but takes off in the second year. Fall color is brightest in full sun. Use in borders, rock gardens, native gardens, cottage gardens or open woodland areas. Best when massed.

Good Substitutions

bluestar Amsonia 'Blue Ice'
eastern bluestar Amsonia tabernaemontana var. salicifolia

Key Characteristics & Attributes

Full Sun
Full Sun
Part Sun
Part Sun
Deer Resistant
Deer Resistant
Cut Flower
Cut Flower
Drought Tolerant
Drought Tolerant

Additional Information

Soil Moisture Needs
Plug Type
Horticultural Plug
Landscape Plug™
Season of Interest (Flowering)
Late Spring / Early Summer
Green Infrastructure
Native to North America
Ornamental Foliage
Propagation Type