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Ornamentalshrub ornamentalStraightforward

Berberis

Berberis thunbergii

A small thorny deciduous shrub grown for foliage — the purple and gold forms hold their colour all season — with fierce spines that make it the standard choice for an intruder-resistant boundary. Colours brilliantly in autumn and carries small red berries after.

Position
Full sun or Partial shade
Water
low demand
Drainage
Free-draining
Grows to
60–200 cm × 60–250 cm
Hardiness
H6
Flowers
April and May
Difficulty
Straightforward

August

Prune

Berberis’s year

Resolved for United Kingdom (general). Every window is stored against a climate event rather than a date, so a late frost pocket runs later than the band shows. What else August calls for.

ActivityJFMAMJJASOND
PlantMarch. October. November.
In flowerApril. May.
PruneJuly. August.

Timing that travels

The band above resolves this plant's windows into months for one region. These are the windows themselves, stored against a climate event rather than a date — which is the form that survives being carried to a colder garden, a frost pocket, or next year.

Conditions it needs

Light
Full sun, Partial shade
Frost
Very hardy
Hardiness rating
H6 (RHS)
Grows best at
8–27 °C
Soil
Loam, Clay, Sandy, Chalky
Soil pH
5.5–8
Drainage
Free-draining
Water needs
low
Drought
good tolerance
Waterlogging
poor tolerance
Heat
good tolerance
Wind and exposure
good tolerance
Where these figures come from
LightSourced guidancemoderate confidence
  • Royal Horticultural Society: Berberis — position

Checked 2026-08-13

FrostSourced guidancehigh confidence
  • Royal Horticultural Society: Berberis — hardiness

Checked 2026-08-13

Hardiness ratingSourced guidancemoderate confidence
  • Royal Horticultural Society: RHS hardiness ratings

Checked 2026-08-13

Grows best atSourced guidancemoderate confidence
  • Royal Horticultural Society: Berberis — temperature

Checked 2026-08-13

SoilSourced guidancemoderate confidence
  • Royal Horticultural Society: Berberis — soil

Checked 2026-08-13

Soil pHSourced guidancemoderate confidence
  • Plant Finder — Missouri Botanical Garden: Berberis thunbergii — culture

Checked 2026-08-13

DrainageSourced guidancemoderate confidence
  • Royal Horticultural Society: Berberis — soil

Checked 2026-08-13

Water needsHorticultural consensusmoderate confidence

No external citation — see the evidence type above.

Checked 2026-08-13

DroughtHorticultural consensusmoderate confidence

No external citation — see the evidence type above.

Checked 2026-08-13

WaterloggingHorticultural consensusmoderate confidence

No external citation — see the evidence type above.

Checked 2026-08-13

HeatHorticultural consensusmoderate confidence

No external citation — see the evidence type above.

Checked 2026-08-13

Wind and exposureHorticultural consensusmoderate confidence

No external citation — see the evidence type above.

Checked 2026-08-13

On your soil

Computed by comparing this plant's recorded requirements against each soil's recorded characteristics. A recorded horticultural fact overrides the comparison where GrowingHQ holds one.

SoilVerdictWhy
Heavy clayWorks, with one conditionBerberis will crop on heavy clay, but one thing has to be dealt with first. It needs ground that drains, and this soil holds water. A plant that stays in the ground through winter with its roots in cold, saturated soil rots — which is what kills most of what fails on heavy ground, rather than the cold.Improve the drainage before planting — a raised bed, or bulky organic matter worked in over several seasons. Do not add sand to clay in small quantities; it makes the problem worse.
SandyPrefers this soilSandy suits Berberis as it stands: The pH suits it: it wants 5.5 to 8, and this soil is in that range. The free drainage is exactly what it wants. Sandy soil is among the soils it is recorded as suiting. It stands dry conditions better than most, which this soil will test.
Chalky and alkalinePrefers this soilChalky and alkaline suits Berberis as it stands: The free drainage is exactly what it wants. Chalky soil is among the soils it is recorded as suiting. It stands dry conditions better than most, which this soil will test.
LoamPrefers this soilLoam suits Berberis as it stands: The pH suits it: it wants 5.5 to 8, and this soil is in that range. The free drainage is exactly what it wants. Loam is among the soils it is recorded as suiting. The soil holds moisture, which saves a great deal of watering.
SiltyPrefers this soilSilty suits Berberis as it stands: The pH suits it: it wants 5.5 to 8, and this soil is in that range. The free drainage is exactly what it wants. The soil holds moisture, which saves a great deal of watering.
Peaty and acidWorks, with one conditionBerberis will crop on peaty and acid, but one thing has to be dealt with first. It needs ground that drains, and this soil holds water. A plant that stays in the ground through winter with its roots in cold, saturated soil rots — which is what kills most of what fails on heavy ground, rather than the cold.Improve the drainage before planting — a raised bed, or bulky organic matter worked in over several seasons. Do not add sand to clay in small quantities; it makes the problem worse.
Shallow over rockPrefers this soilShallow over rock suits Berberis as it stands: The free drainage is exactly what it wants. Loam is among the soils it is recorded as suiting. It stands dry conditions better than most, which this soil will test.
Made ground and urban soilWorks, with one conditionBerberis will crop on made ground and urban soil, but one thing has to be dealt with first. It needs ground that drains, and this soil holds water. A plant that stays in the ground through winter with its roots in cold, saturated soil rots — which is what kills most of what fails on heavy ground, rather than the cold.Improve the drainage before planting — a raised bed, or bulky organic matter worked in over several seasons. Do not add sand to clay in small quantities; it makes the problem worse.

Not sure which you have? Four hand tests will settle it.

Space and spacing

Mature height
60–200 cm
Mature spread
60–250 cm
Rooting depth
50 cm
Spacing
60–120 cm apart
Where these figures come from
Mature heightHorticultural consensusmoderate confidence

No external citation — see the evidence type above.

Checked 2026-08-13

Mature spreadHorticultural consensusmoderate confidence

No external citation — see the evidence type above.

Checked 2026-08-13

Rooting depthHorticultural consensusmoderate confidence

No external citation — see the evidence type above.

Checked 2026-08-13

SpacingSourced guidancemoderate confidence
  • Royal Horticultural Society: Berberis — spacing

Checked 2026-08-13

How far apart to plant berberisThree berberis plants drawn in a row at their recorded spacing of 60–120 cm between plants. The spacing is drawn to scale against a one metre rule; the plants themselves are symbols rather than scale drawings, so the distance between them is the part to read.60–120 cmone metre
Measured centre to centre. Plants set closer than this compete for light and water long before they look crowded, and the crowding cannot be undone once they are in.

In a container

Minimum volume
20 litres or more
Minimum depth
35 cm
Where the container figures come from
Minimum volumeHorticultural consensusmoderate confidence
  • Royal Horticultural Society: Berberis — cultivation

Checked 2026-08-13

Minimum depthHorticultural consensusmoderate confidence
  • Royal Horticultural Society: Berberis — cultivation

Checked 2026-08-13

Workable, particularly the compact purple-leaved forms of Berberis thunbergii, which stay small enough to keep in a pot for years. Loam-based compost, sun for the best leaf colour, and undemanding about water once established. Site it where nobody brushes past: the thorns are vicious and a container puts the plant much closer to people than a border does.

Habit and ultimate size

What the plant becomes, rather than what it is when you buy it. The gap between the two is where most planting mistakes live.

Foliage
Deciduous
In a container
Good in a container long-term
Where these figures come from
FoliageSourced guidancehigh confidence
  • Royal Horticultural Society: Berberis thunbergii — foliage

Checked 2026-08-13

In a containerHorticultural consensusmoderate confidence

No external citation — see the evidence type above.

Checked 2026-08-13

Growth rate
Moderate — roughly 30–60 cm a year
Ultimate height
60–200 cm
Ultimate spread
60–250 cm
Time to reach it
8–12 yearsSourced guidance
Where these figures come from
Growth rateSourced guidancemoderate confidence
  • Royal Horticultural Society: Berberis thunbergii — growth rate

Checked 2026-08-13

Ultimate heightSourced guidancemoderate confidence
  • Royal Horticultural Society: Berberis thunbergii — ultimate height

Checked 2026-08-13

Ultimate spreadSourced guidancemoderate confidence
  • Royal Horticultural Society: Berberis thunbergii — ultimate spread

Checked 2026-08-13

Time to reach itSourced guidancelow confidence
  • Royal Horticultural Society: Berberis thunbergii — time to ultimate size

Checked 2026-08-13

Cutting it back. Cut the oldest stems to the base to renew it; it breaks freely. As a hedge it clips well, and late summer is the right moment — past both the flowers and the birds' nesting season.
source

Horticultural consensusmoderate confidence

No external citation — see the evidence type above.

Checked 2026-08-13

Where and how you can grow it

Each way of growing is assessed separately, and “not assessed” is a real answer rather than a gap we have filled in with a guess.

MethodSuitabilityWhat it needs
Open groundWell suited
source

Sourced guidancemoderate confidence

  • Royal Horticultural Society: Growing method suitability

Checked 2026-08-13

Traditional dug bedWell suited
source

Sourced guidancemoderate confidence

  • Royal Horticultural Society: Growing method suitability

Checked 2026-08-13

Raised bedWell suited
source

Sourced guidancemoderate confidence

  • Royal Horticultural Society: Growing method suitability

Checked 2026-08-13

ContainerWorkable
source

Sourced guidancemoderate confidence

  • Royal Horticultural Society: Growing method suitability

Checked 2026-08-13

Growing it

  • PlantingThe purple-leaved forms need full sun to colour properly; in shade they revert to a muddy bronze-green. The gold-leaved ones are the opposite and scorch in hot afternoon sun, so the two want different positions despite being sold side by side.
  • PruningNeeds little pruning beyond removing the oldest stems at the base occasionally. As a hedge it takes clipping well, but do it in late summer rather than spring so the flowers and the birds' nesting season are both past.
Where this guidance comes from
PlantingSourced guidancemoderate confidence
  • Plant Finder — Missouri Botanical Garden: Berberis thunbergii — culture

Checked 2026-08-13

PruningSourced guidancemoderate confidence
  • Royal Horticultural Society: Berberis — pruning

Checked 2026-08-13

Where to make a pruning cutFour stems compared. The first is cut cleanly on a slope about five millimetres above an outward-facing bud, sloping away from it, and is labelled correct. The second is cut too far above the bud, leaving a long stub that dies back. The third is cut too close, into the bud itself, which loses the shoot. The fourth is cut sloping towards the bud so rain runs onto it rather than away, which rots it. In every case the bud points outwards, away from the centre of the plant.Correct5 mm, sloping awayToo highstub dies backToo closebud lostSloping inrain sits on the bud
The bud you cut to becomes the new shoot, and it grows in the direction it points — which is why an outward-facing bud opens the plant up and an inward-facing one crosses the middle.

What goes wrong

ProblemHow oftenNotes
Berberis sawflycommon
source

Horticultural consensusmoderate confidence

No external citation — see the evidence type above.

Checked 2026-08-13

Group-feeding larvae strip whole shoots inside a week.

Safety and edibility

  • Contact hazardchildrenThe spines are fine, sharp and readily break off under the skin, where they cause a persistent inflamed reaction rather than a clean puncture. Weeding around an established berberis is the commonest way people acquire them.
    source

    Sourced guidancehigh confidence

    • Royal Horticultural Society: Berberis — spines

    Checked 2026-08-13

    Wear thick gauntlets rather than ordinary gardening gloves, and mulch beneath it so that weeding underneath is rarely necessary.

Sources for this page

GrowingHQ editorial synthesis · Plant Finder · Royal Horticultural Society

Each figure on this page carries its own citation, under the “where these figures come from” note in its section. Record last reviewed 2026-08-14.