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Shrub · Berberidaceae family

Japanese barberry

Berberis thunbergii

Full sun to part shade in a garden 0.9–1.5 m × 1–1.8 m Flowers May–June to −32 °C
Flower colours Click a colour

In short a 10-second read

SunFull sun to part shade
in a garden after 10 years0.9–1.5 m
in the wild up to 1.5 m
spacing 80 cm
FlowersMay–June
PlantingMarch–April, October–November
WinterNo winter protection
Watched as potentially invasive (DE) — keep it away from the wild and do not let it spread.

Where to plant and how much to water

Sun, soil and water.

It grows best in full sun to part shade, in dry to average soil.

Sun

Sun6 hours or more
Part shade3–6 hours
Shadeunder 3 h

Soil

acidic to neutral soil
acidicneutralalkaline
dry to averagesandyloamygravelly

Watering

drought tolerant once establishedless when it rains

Frost

−32 °C
no winter protectionleafless in winter

How much space it takes

Mature size.

The mature plant next to a person (175 cm).

50 cm1 m1.5 m0.6–1.5 mspread 0.6–2.1 m
0.6–1.5 m× spread 0.6–2.1 m

Plant 80 cm apart.

Reaches maturity in about 5–10 years. The final size depends on the cultivar and the spot — we give the range from smallest to largest.

Calendar

Through the year.

Months for Central Europe. The line shows the current month.

The year at a glance

Flowers: JanuaryFlowers: FebruaryFlowers: MarchFlowers: AprilFlowers: MayFlowers: JuneFlowers: JulyFlowers: AugustFlowers: SeptemberFlowers: OctoberFlowers: NovemberFlowers: DecemberPlanting: JanuaryPlanting: FebruaryPlanting: MarchPlanting: AprilPlanting: MayPlanting: JunePlanting: JulyPlanting: AugustPlanting: SeptemberPlanting: OctoberPlanting: NovemberPlanting: DecemberFeeding: JanuaryFeeding: FebruaryFeeding: MarchFeeding: AprilFeeding: MayFeeding: JuneFeeding: JulyFeeding: AugustFeeding: SeptemberFeeding: OctoberFeeding: NovemberFeeding: DecemberJanFebMarAprMayJunJulAugSepOctNovDec
FlowersPlantingFeeding
Now, in October: a good time for planting (container plant). · watch for berberis sawfly.
JanFebMarAprMayJunJulAugSepOctNovDec

Flowers

JanFebMarAprMayJunJulAugSepOctNovDec

May–June · yellow

Planting

JanFebMarAprMayJunJulAugSepOctNovDec

container plant: March–April, October–November

Feeding

JanFebMarAprMayJunJulAugSepOctNovDec

May–June

What to plant now (October) full list in October (244) →

Feeding

Nutrition.

Horn meal

up to 40 g/m² a year, if the soil needs it · May–June

JanFebMarAprMayJunJulAugSepOctNovDec

Pests and diseases

Common problems and what to do.

The most common problems in Central Europe. Protection is listed from the gentlest option.

Berberis sawfly

Arge berberidis
pest

What you will see

Larvae (cream with a black head) eat the leaves and can completely defoliate the shrub; genus Berberis and Mahonia, mostly B. thunbergii.

When to look

JanFebMarAprMayJunJulAugSepOctNovDec
May–October

How to protect

  1. Prevention
    • regular checks of the shrub from May
  2. By hand when presentpick off larvae
  3. Chemical — only when nothing else helps as per the labelOnly if the damage is severe: a product authorised in your country against: barberry sawfly.
Berberis sawflypest · May–October

What you will see

Larvae (cream with a black head) eat the leaves and can completely defoliate the shrub; genus Berberis and Mahonia, mostly B. thunbergii.

When to look

JanFebMarAprMayJunJulAugSepOctNovDec
May–October

How to protect

  1. Prevention
    • regular checks of the shrub from May
  2. By hand when presentpick off larvae
  3. Chemical — only when nothing else helps as per the labelOnly if the damage is severe: a product authorised in your country against: barberry sawfly.
Sources (1)

What to combine it with

Same needs, different flowering.

They share the same sun and soil and flower in other months — so the bed flowers for longer.

Frequently asked

Quick answers.

When does Japanese barberry flower?

In May–June; the flowers are yellow.

Does Japanese barberry tolerate shade?

It tolerates part shade (3–6 hours of sun), but not full shade.

How much space does Japanese barberry need?

At maturity 0.6–2.1 m wide and 0.6–1.5 m tall; recommended spacing 80 cm.

Berberis sawfly — what can you do?

regular checks of the shrub from May pick off larvae

Sources (21) Checked 24 October 2026

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