About
A clump-forming perennial with upright stems clothed in narrow, needle-like leaves, fresh green in spring and summer, golden yellow in autumn. Terminal clusters of dark blue buds open to light, greyish-blue, star-shaped flowers in early to mid-summer.
About the genus
Amsonia are clump-forming perennials with milky sap, lance-shaped leaves and terminal panicles of small, starry blue flowers in spring and summer
Growing conditions
SunlightFull sun, Partial shade
Soil typeChalk, Clay, Loam, Sand
Soil pHAcid, Alkaline, Neutral
Soil moistureMoist but well-drained
AspectWest-facing, South-facing, East-facing
ExposureExposed, Sheltered
UK hardinessH7
Plant details
Plant typeHerbaceous Perennial
HabitClump forming
FoliageDeciduous
Height0.5-1 metres
Spread0.1-0.5 metres
Time to full height2-5 years
Suggested usesCottage and informal garden, Prairie planting
Native toUSA (Arkansas, Oklahoma)
Care notes
CultivationGrows best in a fertile, moist but well-drained soil in full sun, although it can tolerate partial shade and is fairly drought-tolerant
PruningCut back in late autumn
PropagationPropagate by seed sown in pots in a cold frame in autumn or spring. Alternatively propagate by division in spring or root softwood cuttings in early summer
Pest resistanceGenerally pest-free
Disease resistanceGenerally disease-free