Plant Library


Blue Star Flower

Amsonia tabernaemontana

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Blue Star Flower (Amsonia tabernaemontana) at Pesche's Garden Center

Blue Star Flower flowers

Blue Star Flower flowers

(Photo courtesy of NetPS Plant Finder)

Blue Star Flower (Amsonia tabernaemontana) at Pesche's Garden Center

Blue Star Flower in bloom

Blue Star Flower in bloom

(Photo courtesy of NetPS Plant Finder)

Height:  24 inches

Spread:  3 feet

Sunlight:  full sun  partial shade 

Hardiness Zone:  3a


A lovely mounded selection that looks beautiful in garden beds, borders or fresh cut bouquets; featuring olive green, pointy foliage and clusters of powder blue star flowers during the late spring; stunning fall color when foliage shifts to golden yellow

Ornamental Features

Blue Star Flower has clusters of powder blue star-shaped flowers at the ends of the stems from late spring to early summer, which are interesting on close inspection. The flowers are excellent for cutting. Its pointy leaves are olive green in color. As an added bonus, the foliage turns a gorgeous yellow in the fall.

Landscape Attributes

Blue Star Flower is an herbaceous perennial with a mounded form. Its medium texture blends into the garden, but can always be balanced by a couple of finer or coarser plants for an effective composition.

This is a relatively low maintenance plant, and may require the occasional pruning to look its best. Deer don't particularly care for this plant and will usually leave it alone in favor of tastier treats. It has no significant negative characteristics.

Blue Star Flower is recommended for the following landscape applications;

  • General Garden Use
  • Naturalizing And Woodland Gardens

Planting & Growing

Blue Star Flower will grow to be about 24 inches tall at maturity, with a spread of 3 feet. It grows at a slow rate, and under ideal conditions can be expected to live for approximately 20 years. As an herbaceous perennial, this plant will usually die back to the crown each winter, and will regrow from the base each spring. Be careful not to disturb the crown in late winter when it may not be readily seen!

This plant does best in full sun to partial shade. It prefers to grow in average to moist conditions, and shouldn't be allowed to dry out. It is not particular as to soil type or pH. It is quite intolerant of urban pollution, therefore inner city or urban streetside plantings are best avoided. This species is native to parts of North America. It can be propagated by cuttings.

Hardiness Zone Plant Height Minimum Sunlight
Garden  Naturalizing 
Flowers  Fall Color 
Ornamental Features