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Choose your climateBased on winter hardiness only.

Perennial · Berberidaceae family

Barrenwort

Epimedium ×perralchicum

Part shade to shade 5⅞ in–11¾ in × 11¾ in–1 ft 5¾ in Flowers April–May to −90 °F
Flower colors Click a color

In short a 10-second read

LightPart shade to shade
Size5⅞ in–11¾ in
spacing 12½ in
FlowersApril–May
PlantingMarch–May, September–November
WinterNo winter protection

Where to plant and how much to water

Light, soil and water.

It grows best in part shade to 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 averagenot fussy about soil

Watering

drought tolerant once establishedless when it rains

Frost

−90 °F
no winter protectiongreen in winter too

How much space it takes

Mature size.

The mature plant next to a person (69 in).

19¾ in3 ft 3⅜ in4 ft 11 in5⅞ in–11¾ inspread 11¾ in–1 ft 5¾ in
5⅞ in–11¾ in× spread 11¾ in–1 ft 5¾ in

Plant 12½ in apart.

Reaches maturity in about 2–5 years. The final size depends on the cultivar and the spot — we give the range from smallest to largest.

Calendar

Through the year.

Typical for a temperate climate (four seasons). 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 vine weevil.
JanFebMarAprMayJunJulAugSepOctNovDec

Flowers

JanFebMarAprMayJunJulAugSepOctNovDec

April–May · yellow

Planting

JanFebMarAprMayJunJulAugSepOctNovDec

container plant: March–May, September–November

Feeding

JanFebMarAprMayJunJulAugSepOctNovDec

March–May

Feeding

Nutrition.

Light
balanced fertilizercompost or mulch
JanFebMarAprMayJunJulAugSepOctNovDec

Pests and diseases

Common problems and what to do.

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

High riskMedium riskLow riskRisk for this plant according to the source · no label = no documented level
Vine weevil

Vine weevil

Otiorhynchus sulcatus
Medium riskpest
More about this problem

What you will see

Adult beetles notch the leaf edges; grubs eat the roots, the plant wilts, especially in a pot.

The source says: it is among the perennials prone to damage.

When to look

JanFebMarAprMayJunJulAugSepOctNovDec
September–March

How to protect

  1. Prevention
    • Check potted plants especially in fall and winter.
    • Encourage natural enemies (birds, toads, hedgehogs, ground beetles).
  2. By hand summer; losses mainly September to MarchIn the evening, collect adult beetles with a torch; if a plant wilts, lift it and remove the grubs from the roots and compost.
  3. Biological August to early SeptemberNematodes (Steinernema 5–68 °F, Heterorhabditis 12–68 °F) into warm soil while the grubs are small; they work poorly in dry and heavy soil.
Vine weevilpest · September–MarchMedium risk

What you will see

Adult beetles notch the leaf edges; grubs eat the roots, the plant wilts, especially in a pot.

The source says: it is among the perennials prone to damage.

When to look

JanFebMarAprMayJunJulAugSepOctNovDec
September–March

How to protect

  1. Prevention
    • Check potted plants especially in fall and winter.
    • Encourage natural enemies (birds, toads, hedgehogs, ground beetles).
  2. By hand summer; losses mainly September to MarchIn the evening, collect adult beetles with a torch; if a plant wilts, lift it and remove the grubs from the roots and compost.
  3. Biological August to early SeptemberNematodes (Steinernema 5–68 °F, Heterorhabditis 12–68 °F) into warm soil while the grubs are small; they work poorly in dry and heavy soil.
More about this problem

Virus (mosaic)

disease

What you will see

Mosaic spots and puckered leaves.

How to protect

  1. Prevention
    • Healthy planting material.
  2. By hand once noticedRemove affected plants.
Virus (mosaic)disease

What you will see

Mosaic spots and puckered leaves.

How to protect

  1. Prevention
    • Healthy planting material.
  2. By hand once noticedRemove affected plants.
Sources (4)

Frequently asked

Quick answers.

When does barrenwort flower?

In April–May; the flowers are yellow.

Does barrenwort tolerate shade?

Yes, it tolerates full shade.

How much space does barrenwort need?

At maturity 11¾ in–1 ft 5¾ in wide and 5⅞ in–11¾ in tall; recommended spacing 12½ in.

Vine weevil — what can you do?

Check potted plants especially in fall and winter. In the evening, collect adult beetles with a torch; if a plant wilts, lift it and remove the grubs from the roots and compost.

Virus (mosaic) — what can you do?

Healthy planting material. Remove affected plants.

Sources (16) Checked 28 September 2026

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