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Perennial · Apiaceae family

Greater masterwort

Astrantia major

Full sun to part shade 0.6–0.9 m × 0.3–0.45 m Flowers June–July to −32 °C
Flower colours Click a colour

In short a 10-second read

SunFull sun to part shade
Size0.6–0.9 m
spacing 40 cm
FlowersJune–July
PlantingMarch–May, September–November
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 average to moist soil.

Sun

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

Soil

acidic to neutral soil
acidicneutralalkaline
average to moisthumus-richloamyclay

Watering

keep the soil evenly moistless when it rains

Frost

−32 °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 m0.6–0.9 mspread 0.3–0.45 m
0.6–0.9 m× spread 0.3–0.45 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: a good time for planting (container plant).
JanFebMarAprMayJunJulAugSepOctNovDec

Flowers

JanFebMarAprMayJunJulAugSepOctNovDec

June–July · white, pink or red

Planting

JanFebMarAprMayJunJulAugSepOctNovDec

container plant: March–May, September–November

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

Pale winding tunnels in leaves.

How to protect

  1. Prevention
    • Remove affected leaves promptly.
  2. By hand when tunnels appearRemove affected leaves; cut the plant back after flowering.
Leaf minerspest

What you will see

Pale winding tunnels in leaves.

How to protect

  1. Prevention
    • Remove affected leaves promptly.
  2. By hand when tunnels appearRemove affected leaves; cut the plant back after flowering.
More about this problem

What you will see

Holes in leaves and shiny trails, especially on young shoots in spring.

How to protect

  1. Prevention
    • Water in the morning so the plant dries off by evening.
    • Watch and protect young shoots in spring.
    • Encourage natural enemies (birds, toads, hedgehogs).
  2. By hand damp, mild evenings from spring to autumnCollect slugs and snails in the evening by torchlight; traps made of half an orange or containers of beer.
  3. Biological warm, moist soil, spring to early autumnPhasmarhabditis hermaphrodita nematodes watered into the soil (effective against slugs, less so against snails).
Slugs and snailspest

What you will see

Holes in leaves and shiny trails, especially on young shoots in spring.

How to protect

  1. Prevention
    • Water in the morning so the plant dries off by evening.
    • Watch and protect young shoots in spring.
    • Encourage natural enemies (birds, toads, hedgehogs).
  2. By hand damp, mild evenings from spring to autumnCollect slugs and snails in the evening by torchlight; traps made of half an orange or containers of beer.
  3. Biological warm, moist soil, spring to early autumnPhasmarhabditis hermaphrodita nematodes watered into the soil (effective against slugs, less so against snails).
More about this problem

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

What you will see

White powdery coating on leaves and stems; leaves curl and dry out.

When to look

From spring onwards

How to protect

  1. Prevention
    • Sunny, airy position; not in a still spot against a wall.
    • Do not overdo nitrogen (lush young leaves are more susceptible).
    • Water at the roots, not on the leaves.
  2. By hand as soon as the first symptoms appearQuickly cut out affected shoots and burn them or take them away (not to the compost).
  3. Gentle spray at the start of infectionSulphur or fatty acids (potassium soap) according to the label.
  4. Chemical — only when nothing else helps only in a heavy attackA product authorised in your country against powdery mildew.
Powdery mildewsdisease · from spring onwards

What you will see

White powdery coating on leaves and stems; leaves curl and dry out.

When to look

From spring onwards

How to protect

  1. Prevention
    • Sunny, airy position; not in a still spot against a wall.
    • Do not overdo nitrogen (lush young leaves are more susceptible).
    • Water at the roots, not on the leaves.
  2. By hand as soon as the first symptoms appearQuickly cut out affected shoots and burn them or take them away (not to the compost).
  3. Gentle spray at the start of infectionSulphur or fatty acids (potassium soap) according to the label.
  4. Chemical — only when nothing else helps only in a heavy attackA product authorised in your country against powdery mildew.
More about this problem
Sources (5)

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.

showy stonecrop

showy stonecrop

0.3–0.5 m
✓flowers August–October
✓lower — for the front
common sneezeweed

common sneezeweed

0.9–1.5 m
✓flowers August–October
✓taller — for the back
wild daffodil

wild daffodil

0.3–0.46 m
✓flowers March–April
✓lower — for the front

Ready-made Studio combinations with this plant

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

Cottage garden — Chinese peonyCottage garden — greater masterwortCottage garden — woodland sageCottage garden — bloody cranesbillCottage garden — Columbine
Cottage gardenPeonies, columbines, masterwort and cranesbill — a romantic bed in bloom from May to September.Open in the Studio
Part-shade blooms — astilbePart-shade blooms — greater masterwortPart-shade blooms — largeleaf brunneraPart-shade blooms — coralbellsPart-shade blooms — Hakone grass
Part-shade bloomsAstilbes, masterwort and blue brunnera brighten part shade from April to August.Open in the Studio

Frequently asked

Quick answers.

When does greater masterwort flower?

In June–July; the flowers are white, pink or red.

Does greater masterwort tolerate shade?

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

How much space does greater masterwort need?

At maturity 0.3–0.45 m wide and 0.6–0.9 m tall; recommended spacing 40 cm.

Leaf miners — what can you do?

Remove affected leaves promptly. Remove affected leaves; cut the plant back after flowering.

Slugs and snails — what can you do?

Water in the morning so the plant dries off by evening. Collect slugs and snails in the evening by torchlight; traps made of half an orange or containers of beer.

Sources (14) Checked 28 September 2026

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