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Herbaceous Perennial

Jeffersonia dubia

twin leaf

J. dubia is a deciduous perennial to 20cm tall, forming a compact clump of kidney-shaped, shallowly 2-lobed leaves, with pale violet-blue flowers 2.5cm across opening with the new leaves in early spring

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Size
Ultimate height
0.1–0.5 metres
Time to ultimate height
1–2 years
Ultimate spread
0–0.1 metre
Growing conditions
Loam
Moisture
Moist but well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Blue Green
Summer
Autumn
Winter
Position
  • Full shade
  • Partial shade
Aspect

North–facing or East–facing

Exposure
Sheltered
Hardiness
H6
Botanical details
Family
Berberidaceae
Native to the UK
No
Foliage
Deciduous
Habit
Bushy
Genus

Jeffersonia are small, clump-forming perennials with2-lobed, kidney-shaped leaves and bowl-shaped white or pale violet flowers in spring

Name status

Correct

Plant range
NE Asia

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How to grow

Cultivation

Grow in moist, humus-rich, preferably neutral to acid soil in partial or full shade; top dress with leaf mould or other humus-rich material in autumn. Dislikes disturbance and may take a year or two to settle after transplanting; established plants tolerate drought

Propagation

Propagate by seed in containers in an open frame as soon as ripe or divide established plants in spring

Suggested planting locations and garden types
  • Rock garden
  • Flower borders and beds
Pruning

No pruning required

Pests

Prone to slugs and snails especially in spring

Diseases

Generally trouble free

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