Amsonia 'String Theory' is a compact, refined version of the classic Blue Star. It features soft, thread-like foliage and stunning clusters of starry, periwinkle-blue flowers in late spring. This low-maintenance perennial adds graceful texture to sunny borders, cottage gardens, and pollinator-friendly landscapes. Its fall foliage turns a brilliant golden-yellow, making it a standout in every season. It's deer-resistant and drought-tolerant once established — perfect for gardeners seeking beauty with ease. Hardiness USDA Zones: 4–9 Light: Full Sun to Partial Shade Mature Size: 18–22 inches tall × 28–32 inches wide Bloom Time: Late Spring to Early Summer Flower Color: Periwinkle Blue Foliage: Fine-textured, green; turns golden yellow in fall Pollinator Friendly: Attracts bees & butterflies Deer Resistant and Drought Tolerant Note: Your plant ships potted and carefully packaged. It may enter dormancy in fall/winter and appear dry or leafless — this is normal. Growth resumes in spring. Due to agricultural regulations, we cannot ship certain sizes to California. Frequently Asked Questions❓ Does Amsonia 'String Theory' need full sun? � It grows best in full sun but tolerates partial shade, especially in hot climates. Will deer eat this plant? � Not likely! Amsonia is naturally deer-resistant due to its sap and texture. When does it bloom? � It blooms in late spring to early summer with soft blue star-shaped flowers. Does it provide fall color? � Yes! Its fine green leaves turn a bright golden-yellow in fall. Can it be grown in containers? � Yes, its compact form makes it suitable for larger pots and raised beds. Growing Zones: 4–9 Mature Height: 18–22 inches Sunlight: Full Sun to Part Shade Mature Width: 28–32 inches Botanical Name: Amsonia hubrichtii 'String Theory' Growth Rate: Moderate Foliage: Fine, thread-like green foliage Plant Type: Herbaceous Perennial Product Type: Low-Maintenance Pollinator Perennial