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Raised garden bed I – solid 2⅜ in European larchRaised garden bed IRaised garden bedsRaised garden bed L – solid 2⅜ in European larchRaised garden bed LRaised garden bedsRaised garden bed U – solid 2⅜ in European larchRaised garden bed URaised garden bedsBed I with bench – solid 2⅜ in European larchBed I with benchRaised garden bedsBed L with bench – solid 2⅜ in European larchBed L with benchRaised garden bedsSolid bench – solid 2⅜ in European larchSolid benchSeatingPedestal bench – solid 2⅜ in European larchPedestal benchSeatingBench with planter – solid 2⅜ in European larchBench with planterSeatingGarden table – solid 2⅜ in European larchGarden tableSeatingTable and two benches – solid 2⅜ in European larchTable and two benchesSeatingSandbox with seating – solid 2⅜ in European larchSandbox with seatingFor kidsGarden steps – solid 2⅜ in European larchGarden stepsSlope & terrace

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Choose your climateBased on winter hardiness only.

Shrub · Hydrangeaceae family

Panicle hydrangea

Hydrangea paniculata

Full sun to part shade in a garden 4 ft 11 in–8 ft 2⅜ in × 4 ft 11 in–8 ft 2⅜ in Flowers July–September to −104 °F
Flower colors Click a color

In short a 10-second read

SunFull sun to part shade
in a garden after 10 years4 ft 11 in–8 ft 2⅜ in
in the wild up to 16 ft 4⅞ in
spacing 8 ft 2⅜ in
FlowersJuly–September
PlantingMarch–April, October–November
PruningMarch–April
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 moistnot fussy about soil

Watering

only in dry spellsless when it rains

Frost

−104 °F
no winter protectionleafless in winter

How much space it takes

Mature size.

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

3 ft 3⅜ in6 ft 6¾ in9 ft 10⅛ in13 ft 1½ in16 ft 4⅞ in4 ft 11 in–16 ft 4⅞ inspread 4 ft 11 in–13 ft 1½ in
4 ft 11 in–16 ft 4⅞ in× spread 4 ft 11 in–13 ft 1½ in

Plant 8 ft 2⅜ in 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.

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: DecemberPruning: JanuaryPruning: FebruaryPruning: MarchPruning: AprilPruning: MayPruning: JunePruning: JulyPruning: AugustPruning: SeptemberPruning: OctoberPruning: NovemberPruning: DecemberJanFebMarAprMayJunJulAugSepOctNovDec
FlowersPlantingFeedingPruning
Now, in October: a good time for planting (container plant).
JanFebMarAprMayJunJulAugSepOctNovDec

Flowers

JanFebMarAprMayJunJulAugSepOctNovDec

July–September · white or pink

Planting

JanFebMarAprMayJunJulAugSepOctNovDec

container plant: March–April, October–November

Feeding

JanFebMarAprMayJunJulAugSepOctNovDec

May–June

Pruning

JanFebMarAprMayJunJulAugSepOctNovDec

hard pruning (March–April)

What to plant now (October) full list in October (243) →

Feeding

Nutrition.

Horn meal

up to 0.13 oz/sq ft a year, if the soil needs it · May–June

JanFebMarAprMayJunJulAugSepOctNovDec

Pruning

When and how to prune.

Typical for a temperate climate (four seasons).

Panicle hydrangea — Hard pruning

Hard pruning

MarApr
How to prunePrune hard: all of last year’s stems back to a low framework or the ground, dead, diseased and damaged wood.

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

Medium 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 among the ornamental plants susceptible to powdery mildew.

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 authorized in your country against: powdery mildew.
Powdery mildewsdiseaseMedium risk

What you will see

White powdery coating on leaves and shoots.

The source says: it is among the ornamental plants susceptible to powdery mildew.

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 authorized in your country against: powdery mildew.
More about this problem
Honey fungus

Honey fungus

Armillaria
diseasesource covers the whole genus
More about this problem

What you will see

Decline of the shrub, especially under drought stress.

How to protect

  1. Prevention
    • do not stress with drought
  2. By hand when presentremove affected shrubs
Honey fungusdisease

What you will see

Decline of the shrub, especially under drought stress.

How to protect

  1. Prevention
    • do not stress with drought
  2. By hand when presentremove affected shrubs
More about this problem
Sources (2)

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.

weigela

weigela

5 ft 10⅞ in–9 ft 10⅛ in
✓flowers May–June
✓lower — for the front
Japanese holly

Japanese holly

4 ft 11 in–9 ft 10⅛ in
✓flowers May–June
✓lower — for the front
Japanese barberry

Japanese barberry

1 ft 11⅝ in–4 ft 11 in
✓flowers May–June
✓lower — for the front

Frequently asked

Quick answers.

When does panicle hydrangea flower?

In July–September; the flowers are white or pink.

Does panicle hydrangea tolerate shade?

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

How much space does panicle hydrangea need?

At maturity 4 ft 11 in–13 ft 1½ in wide and 4 ft 11 in–16 ft 4⅞ in tall; recommended spacing 8 ft 2⅜ in.

Powdery mildews — what can you do?

open pruning, do not plant too densely remove affected parts

Honey fungus — what can you do?

do not stress with drought remove affected shrubs

Sources (18) Checked 24 October 2026

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