EN
Open Studio
GridGarden Studio

Perennial · Euphorbiaceae family

Cushion spurge

Euphorbia polychroma

Full sun to part shade 0.3–0.45 m × 0.3–0.6 m Flowers April–May to −34 °C
Flower colours Click a colour

In short a 10-second read

SunFull sun to part shade
Size0.3–0.45 m
spacing 40 cm
FlowersApril–May
PlantingApril–May
WinterNo winter protection

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

tolerates any pH
acidicneutralalkaline
dry to averageloamysandy

Watering

drought tolerant once establishedless when it rains

Frost

−34 °C
no winter protectiondies back in winter, regrows in spring

How much space it takes

Mature size.

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

50 cm1 m1.5 m0.3–0.45 mspread 0.3–0.6 m
0.3–0.45 m× spread 0.3–0.6 m

Plant 40 cm 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.

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: nothing to do — the next job is in April.
JanFebMarAprMayJunJulAugSepOctNovDec

Flowers

JanFebMarAprMayJunJulAugSepOctNovDec

April–May · yellow

Planting

JanFebMarAprMayJunJulAugSepOctNovDec

container plant: April–May

Feeding

JanFebMarAprMayJunJulAugSepOctNovDec

March–May

Feeding

Nutrition.

Light
balanced fertilisercompost 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.

What you will see

Colonies of tiny insects on shoots and buds, sticky honeydew, curled leaves.

When to look

Spring and summer

How to protect

  1. Prevention
    • Check plants regularly from spring.
    • Encourage ladybirds, hoverflies, lacewings and parasitic wasps.
  2. By hand as soon as it appearsRub off colonies by hand or wash them off with a jet of water.
  3. Biological spring to summerRelease lacewing larvae, aphid midge larvae or ladybirds.
  4. Gentle spray in a heavy infestation, repeatPotassium soap (fatty acids) or plant oil.
  5. Chemical — only when nothing else helps only as a last resortA product authorised in your country against aphids.
Aphidspest · spring and summer

What you will see

Colonies of tiny insects on shoots and buds, sticky honeydew, curled leaves.

When to look

Spring and summer

How to protect

  1. Prevention
    • Check plants regularly from spring.
    • Encourage ladybirds, hoverflies, lacewings and parasitic wasps.
  2. By hand as soon as it appearsRub off colonies by hand or wash them off with a jet of water.
  3. Biological spring to summerRelease lacewing larvae, aphid midge larvae or ladybirds.
  4. Gentle spray in a heavy infestation, repeatPotassium soap (fatty acids) or plant oil.
  5. Chemical — only when nothing else helps only as a last resortA product authorised in your country against aphids.
More about this problem

Grey mould

Botrytis cinerea
disease
More about this problem

What you will see

Grey fuzzy mould on dying parts, rot of buds and stems.

When to look

All year

How to protect

  1. Prevention
    • Remove dead leaves and spent flowers.
    • Adequate spacing and ventilation of the planting.
  2. By hand as soon as it appearsRemove affected parts and do not leave plant debris lying around.
Grey moulddisease · all year

What you will see

Grey fuzzy mould on dying parts, rot of buds and stems.

When to look

All year

How to protect

  1. Prevention
    • Remove dead leaves and spent flowers.
    • Adequate spacing and ventilation of the planting.
  2. By hand as soon as it appearsRemove affected parts and do not leave plant debris lying around.
More about this problem
Sources (3)

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.

Ready-made Studio combinations with this plant

Click a combination — the Studio opens a new raised bed with it already planted.

Frequently asked

Quick answers.

When does cushion spurge flower?

In April–May; the flowers are yellow.

Does cushion spurge tolerate shade?

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

How much space does cushion spurge need?

At maturity 0.3–0.6 m wide and 0.3–0.45 m tall; recommended spacing 40 cm.

Aphids — what can you do?

Check plants regularly from spring. Rub off colonies by hand or wash them off with a jet of water.

Grey mould — what can you do?

Remove dead leaves and spent flowers. Remove affected parts and do not leave plant debris lying around.

Sources (12) Checked 24 October 2026

Similar plants

Have a look at these too.

Design a bed with this plant in Studio