we make gardening gifts easy 🎁 | FREE Shipping $45+

we make gardening gifts easy 🎁 | FREE Shipping $45+


'String Theory' (Amsonia)

  • heat tolerant
  • resists deer

Full Sun
Part Sun
Height18 - 22 in
Spread36 in
Current Location:

String Theory Amsonia is a spring-flowering perennial that provides foliage and texture interest throughout summer. It has stunning light periwinkle blue flowers are produced above dark green, threadleaf leaves. It is heat tolerant and resists deer. Fertilize with Proven Winners Continuous Release Plant Food in spring.

  • 18-22 inches tall & 36 inches wide at maturity
  • Grow in zones 4-8
  • Partial to full sun (4+ hours) required

Care: Clean away any dead foliage after frost. Fertilize with Proven Winners Continuous Release Plant Food in spring.

Shipping Info: 

  • Enjoy free shipping on orders over $45
  • Size at shipping varies by the season and plant 
  • 1 Gallon plants are 6-14 in. tall and about 1-year old at shipment, varies by season and plant
  • 1 Gallon containers are 7.5 in. dia and 6.5 in. tall

    Read our guide to get started with planning a garden


    • Heat Tolerant
    • Resists Deer


    • Hardiness Zones: 04 05 06 07 08
    • Height: 18 - 22 in
    • Spread: 36 in
    • Habit: Mounded
    • Bloom Color: Blue
    • Foliage Color: Green
    • Bloom Time: Spring-Summer
    • Plant Type: Perennial
    Proven Plants

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