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Shrub · Hydrangeaceae family

Bigleaf hydrangea

Hydrangea macrophylla

Part shade in a garden 1–1.8 m × 1–1.8 m Flowers June–September to −21 °C
Flower colours Click a colour

In short a 10-second read

LightPart shade
in a garden after 10 years1–1.8 m
in the wild up to 2 m
spacing 1.2 m
FlowersJune–September
PlantingApril–May
WinterNo winter protection

Where to plant and how much to water

Light, soil and water.

It grows best in part shade, in average to moist soil.

Sun

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

Soil

tolerates any pH
acidicneutralalkaline
average to moisthumus-richloamy

Watering

keep the soil evenly moistless when it rains

Frost

−21 °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 m2 m1–2 mspread 1–2 m
1–2 m× spread 1–2 m

Plant 1.2 m 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: nothing to do — the next job is in April.
JanFebMarAprMayJunJulAugSepOctNovDec

Flowers

JanFebMarAprMayJunJulAugSepOctNovDec

June–September · pink, blue, white or red

Planting

JanFebMarAprMayJunJulAugSepOctNovDec

container plant: April–May

Feeding

JanFebMarAprMayJunJulAugSepOctNovDec

May–June

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.

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

Powdery mildews

High riskdiseasesource covers the whole genus
More about this problem

What you will see

White powdery coating on leaves and shoots.

The source says: it is most serious on bigleaf hydrangea.

How to protect

  1. Prevention
    • open pruning, do not plant too densely
    • rake up and remove fallen leaves
  2. By hand when presentremove affected parts
  3. Gentle spray at the first symptomspotassium bicarbonate or horticultural oil (only for heavy infestation)
  4. Chemical — only when nothing else helps as per the labelOnly if the damage is severe: a product authorised in your country against: powdery mildew.
Powdery mildewsdiseaseHigh risk

What you will see

White powdery coating on leaves and shoots.

The source says: it is most serious on bigleaf hydrangea.

How to protect

  1. Prevention
    • open pruning, do not plant too densely
    • rake up and remove fallen leaves
  2. By hand when presentremove affected parts
  3. Gentle spray at the first symptomspotassium bicarbonate or horticultural oil (only for heavy infestation)
  4. Chemical — only when nothing else helps as per the labelOnly if the damage is severe: a product authorised in your country against: powdery mildew.
More about this problem

Grey mould

Botrytis cinerea
High riskdiseasesource covers the whole genus
More about this problem

What you will see

Grey mould coating on flowers and leaves in damp conditions.

The source says: bigleaf hydrangea is highly susceptible.

How to protect

  1. Prevention
    • airy position, do not wet the leaves
  2. By hand when presentremove affected parts
Grey moulddiseaseHigh risk

What you will see

Grey mould coating on flowers and leaves in damp conditions.

The source says: bigleaf hydrangea is highly susceptible.

How to protect

  1. Prevention
    • airy position, do not wet the leaves
  2. By hand when presentremove affected parts
More about this problem
Vine weevil

Vine weevil

Otiorhynchus sulcatus
pest
More about this problem

What you will see

Hydrangeas are susceptible; chewed leaf edges, larvae eat the roots.

How to protect

  1. Prevention
    • check roots in pots
  2. Chemical — only when nothing else helps as per the labelOnly if the damage is severe: a product authorised in your country against: vine weevil.
Vine weevilpest

What you will see

Hydrangeas are susceptible; chewed leaf edges, larvae eat the roots.

How to protect

  1. Prevention
    • check roots in pots
  2. Chemical — only when nothing else helps as per the labelOnly if the damage is severe: a product authorised in your country against: vine weevil.
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.

rhododendron

rhododendron

0.5–2.5 m
✓flowers April–June
✓taller — for the back
Oregon grape

Oregon grape

0.9–1.8 m
✓flowers March–April
✓lower — for the front

Frequently asked

Quick answers.

When does bigleaf hydrangea flower?

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

Does bigleaf hydrangea tolerate shade?

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

How much space does bigleaf hydrangea need?

At maturity 1–2 m wide and 1–2 m tall; recommended spacing 1.2 m.

Powdery mildews — what can you do?

open pruning, do not plant too densely remove affected parts

Grey mould — what can you do?

airy position, do not wet the leaves remove affected parts

Sources (13) Checked 24 October 2026

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