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'String Theory' Blue Star Amsonia hybrid

Exposure
  • Part Sun to Sun

The optimum amount of sun or shade each plant needs to thrive: Full Sun (6+ hours), Part Sun (4-6 hours), Full Shade (up to 4 hours).

Flower Season
  • Spring
  • Summer
Mature Size
22" 3'
Height
18" - 22"
Spread
3' - 3'
  • Details

    Features

    A spring-flowering perennial that provides foliage and texture interest throughout summer. Light periwinkle blue flowers are produced above dark green, threadleaf leaves.

    Heat Tolerant
    Resists: 
    Deer
    Native to North America

    Characteristics

    Plant Type: 
    Perennial
    Height Category: 
    Medium
    Garden Height: 
    18 - 22 Inches
    Spacing: 
    32 - 36 Inches
    Spread: 
    32 - 36 Inches
    Flower Colors: 
    Blue
    Flower Shade: 
    Light perwinkle blue
    Foliage Colors: 
    Green
    Foliage Shade: 
    Dark green
    Habit: 
    Mounded
    Container Role: 
    Thriller

    Plant Needs

    Light Requirement: 
    Part Sun to Sun
    Maintenance Category: 
    Easy
    Bloom Time: 
    Early Summer
    Bloom Time: 
    Late Spring
    Hardiness Zones: 
    4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b
    Water Category: 
    Average
    Soil Fertility Requirement: 
    Average Soil
    Soil Fertility Requirement: 
    Fertile Soil
    Soil PH Category: 
    Neutral Soil
    Uses: 
    Border Plant
    Uses: 
    Landscape
    Uses: 
    Mass Planting
    Maintenance Notes: 

    Grows best in full sun to part shade and average, moist soil. Moderately drought tolerant once established. Thrives in most gardens with little care.

    'String Theory' Amsonia hybrid USPPAF, Can PBRAF
  • 3 Reviews

    5
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    2
    1
    Browse reviews from people who have grown this plant.
    • I'm glad to see this as it is a delightful plant. I'm surprised that you did not mention the wonderful yellow colour the foliage turns in the Fall. One of my favourites due to multi-season interest. And one of the last to emerge from the ground in the spring. I'd recommend putting in a reminder marker so you don't accidentally uproot it.

      Wilma Findlay
      , Ontario
      , Canada
      , 15 min ago
    • A few years ago, I stumbled across this Amsonia plant at a local garden center during their end of season perennial sale. This then foot tall plant with its many vibrant ostrich-like plumes gently swaying on a breezy mid-August afternoon and in a one gallon pot minus any sign of a floral display or tag indentifing its name, care, or planting instructions more than caught my eye. It’s gracefulness simply beckoned me to take it home. Somehow, I knew it’s deep green plumes would be perfect in the rear part of my flower garden. Now, three years later it’s grown into a circular lush display of greenery that produces an abundance of periwinkle colored softball size, snowflake-like blooms early every summer. My Amsonia is an eye catching plant and often becomes a conversion starter with those who pass by flower gardens.

      Ginger Knight
      , New York
      , United States
      , 4 weeks ago
    • Ginger Knight
      , New York
      , United States
      , 4 weeks ago
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