Shipping has begun for 2026! See the map on each plant page for when we ship to your zone.

Amsonia 'String Theory'

Regular price $1899
Shipping calculated at checkout.

Shipping has started depending on your zone. See map below for when your order will ship.

Plant maturity level and availability at the time may effect actual ship date.

  • Pot Size: 5.25 Inch Square Pot 
  • Common Name: Arkansas Blue Star
  • Exposure: Full Sun to Partial Sun
  • Hardiness Zone: 4-9
  • Bloom Color: Blue
  • Bloom Time: Spring-Summer
  • Garden Height: 18-22 Inches
  • Garden Spread: 32-36 Inches

A graceful and long lived native plant with fine willow like foliage. In spring the plant is spotted with clusters of steel blue star shaped flowers. Amsonia are prized for their golden yellow fall display and are very resistant to insect and disease problems.

Uses: Beds, Borders, Mass Planting, Landscape, Cottage Gardens
Nature Attraction: Hummingbirds, Butterflies, Bees
Critter Resistance: Deer
Notable Features: Good Cut Flower, Disease resistant 
Growth Habit: Upright, Compact
Water Requirements: Water soil fully  and keep soil fairly moist, but not soggy. (once established)

Photo courtesy of Proven Winners - www.provenwinners.com

Homeowner Growing Tips

Grow in well-drained soil. Average to low water needs.

Delivery and Shipping

Orders will be scheduled to ship based on the last frost date in your area. See the map below for more information.

We guarantee our plants to arrive in acceptable condition. If there are any issues upon delivery, please email support@romencegardens.com within 48 hours and we will resolve the issue.

Plants are routinely trimmed as part of proper plant maintenance. You may receive plants that have been trimmed. This will result in improved and better overall longevity, performance and appearance.

Images are of mature plants and not necessarily an exact representation of what will be sent.

When Will My Order Ship?

Your order will be scheduled for shipment based on the last frost date in your area as indicated by this map and on the maturity of the plants themselves. If you would prefer a different ship date, please include that in the notes of your order.