Threadleaf Amsonia, String Theory

$12.5

Outdoor Plant Size

String Theory Blue Star has clusters of sky 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 narrow leaves are dark green in color. As an added bonus, the foliage turns a gorgeous harvest gold in the fall.

Mature Height: 24 - 36"

Mature Spread: 18 - 24"

Sunlight Exposure: Sun, Partial

Water Needs: Moderate

All returns must be either brought in or postmarked within 14 days of the purchase date or delivery date, whichever is more recent. Items returned after this period will not be accepted or eligible for a refund.

Annuals and Perennials are not covered under warranty.


If you are returning item(s) purchased in our stores, please bring your receipt. When returning an online purchase, please include the order confirmation emails.
Returns without a receipt within 14 days receive store credit at the lowest price offered.

All returns must be either brought in or postmarked within 14 days of the purchase date or delivery date, whichever is more recent. Items returned after this period will not be accepted or eligible for a refund.

Annuals and Perennials are not covered under warranty.


If you are returning item(s) purchased in our stores, please bring your receipt. When returning an online purchase, please include the order confirmation emails.
Returns without a receipt within 14 days receive store credit at the lowest price offered.

Plant Profile

Threadleaf Amsonia, String Theory

Sunlight Exposure

Sun, Partial

Water Needs

Moderate

Landscape Use

Border, Accent

Growth Rate

Moderate

Growth Shape

Clumping

Flowering Season

Spring

Foliage Color

Green

Season of Interest

Spring, Fall

Fall Color

Copper-Brown-Bronze

Winter Foliage

Deciduous

Chalet-nursery Quality Guranteed

Each plant is carefully selected by our horticultural experts to ensure top quality, health, and beauty—bringing the best of nature to your home

Local Delivery

Our local delivery service brings plants right to your doorstep, with expert care to ensure they arrive healthy and thriving.

Need Help?

You can make an appointment with our plant specialist for your next visit to our store, or email us.