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Shrubs

Amorpha ouachitensis

Cuchita false indigo

A deciduous shrub with a loose, slightly untidy habit. Bears grey-green leaves, 15-20cm long, made up of smaller oval leaflets. Produces clustered spikes, 10-20cm long, of tiny flowers with purple petals flecked with yellow in late spring/early summer. Height approximately 2m, spread 1.5-2m.

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Ultimate height

1.5–2.5 metres

Time to ultimate height

5–10 years

Ultimate spread

1–1.5 metres

Chalk

Loam

Sand

Moisture

Moist but well–drained, Well–drained

pH

Acid, Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full sun
Partial shade

Aspect

East–facing or South–facing or West–facing or North–facing

Exposure

Exposed or Sheltered

Drought resistance

Yes

Hardiness
Hardiness ratings
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
H1a: under glass all year (>15C)
H1b: can be grown outside in the summer (10 - 15)
H1c: can be grown outside in the summer (5 - 10)
H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
H4: hardy through most of the UK (-10 to -5)
H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
H6: hardy in all of UK and northern Europe (-20 to -15)
H7: hardy in the severest European continental climates (< -20)

Botanical details

Family: Fabaceae
Native to GB / Ireland: No
Foliage: Deciduous
Habit: Bushy
Genus: Amorpha are deciduous shrubs with pinnate leaves and racemes of tiny, single-petalled, deep purple or blue flowers in summer
Name status: Correct
Plant range: USA (Oklahoma, Arkansas)

How to grow

Cultivation

Grow in moist but well drained soil in full sun or partial shade. Does well in poor, dry sandy soils

Propagation

Propagate by seed.

Suggested planting locations and garden types

Cottage and informal garden
Rock garden
Prairie planting

Pruning

Pruning group 6

Pests

Generally pest-free

Diseases

May be susceptible to rust diseases and powdery mildews

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