Caragana arborescens

RHS Plant Profile

Siberian pea tree

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Other common names

pea tree

Synonyms

Caragana sibirica

Shrubs

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An upright, deciduous spiny shrub to 6m in height, with light green leaves made up of oval-shaped leaflets. In late spring, pale yellow flowers appear. These are followed by brown seed pods in autumn

Position

Full sun

Soil Types

Chalk, Clay, Loam, Sand

Max Height

4-8 metres

Max Spread

2.5-4 metres

Size

Time to Maturity: 10–20 years
Max Spread: 2.5-4 metres
Max Height: 4-8 metres

Growing Conditions

Chalk Clay Loam Sand

Moisture: Well–drained or Moist but well–drained
pH: Acid or Alkaline or Neutral

Position

Full sun

Aspect: South–facing or West–facing
Exposure: Exposed or Sheltered
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): H7
Drought Resistance: Yes

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Fabaceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Columnar upright
Genus: Caragana are deciduous, usually spiny shrubs with pinnate leaves and solitary or clustered yellow, occasionally white or pink flowers, followed by brown pods
Name Status: Correct
Plant Range: C Asia to Siberia, Korea

How to Grow

Cultivation

Grow in well-drained soil in full sun. Useful as a windbreak

Propagation

Propagate by seed, or by softwood cuttings

Suggested planting locations and garden types

City and courtyard gardens
Gravel garden
Low Maintenance
Flower borders and beds
Hedging and screens

Pruning

Pruning group 1

Pests

Generally pest-free

Diseases

May be susceptible to honey fungus in gardens where it is present but insufficient data to determine degree of susceptibility