Amsonia hubrichtii

RHS Plant Profile
Arkansas bluestar

Other common names

Hubricht's bluestar

Herbaceous Perennial

A clump-forming perennial with upright stems clothed in narrow, needle-like leaves, bright 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

Position

Full sun, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

0.5-1 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity
2–5 years
Max Spread
0.1-0.5 metres
Max Height
0.5-1 metres

Growing Conditions

Chalk Clay Loam Sand
Moisture
Moist but well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun Partial shade
Aspect
West–facing or South–facing or East–facing
Exposure
Exposed or Sheltered
Hardiness
H7
Drought Resistance
Yes

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Apocynaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Clump forming
Genus
Amsonia are clump-forming perennials with milky sap, lance-shaped leaves and terminal panicles of small, starry blue flowers in spring and summer
Name Status
Correct
Plant Range
USA (Arkansas, Oklahoma)

How to Grow

Cultivation

Grows best in a fertile, moist but well-drained soil in full sun, although it can tolerate partial shade and is fairly drought-tolerant

Propagation

Propagate 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

Suggested planting locations and garden types

  • Cottage and informal garden
  • Prairie planting
  • Flower borders and beds

Pruning

Cut back in late autumn

Pests

Generally pest-free

Diseases

Generally disease-free