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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.

Tree · Sapindaceae family

Red horse chestnut

Aesculus × carnea

Full sun to part shade in a garden 13 ft 1½ in–22 ft 11⅝ in × 9 ft 10⅛ in–16 ft 4⅞ in Flowers May to −84 °F
Flower colors Click a color

In short a 10-second read

SunFull sun to part shade
in a garden after 10 years13 ft 1½ in–22 ft 11⅝ in
in the wild up to 49.2 ft
spacing 26 ft 3 in
FlowersMay
PlantingMarch–April, October–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

tolerates any pH
acidicneutralalkaline
average to moistloamyclayhumus-rich

Watering

only in dry spellsless when it rains

Frost

−84 °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 in19 ft 8¼ in22 ft 11⅝ in26 ft 3 in29 ft 6⅜ in32.8 ft36.1 ft39.4 ft42.7 ft45.9 ft49.2 ft32.8 ft–49.2 ftspread 26 ft 3 in–39.4 ft
32.8 ft–49.2 ft× spread 26 ft 3 in–39.4 ft

Plant 26 ft 3 in apart.

Reaches maturity in about 20–50 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, bare-root, root-balled).
JanFebMarAprMayJunJulAugSepOctNovDec

Flowers

JanFebMarAprMayJunJulAugSepOctNovDec

May · pink or red

Planting

JanFebMarAprMayJunJulAugSepOctNovDec

container plant: March–April, October–November; bare-root: March–April, October–November; root-balled: March–April, October–November

Feeding

JanFebMarAprMayJunJulAugSepOctNovDec

May–June

Feeding

Nutrition.

Horn meal

up to 0.18 oz/sq ft 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

Horse chestnut leaf blotch

Low riskdisease

What you will see

Irregular brown patches of dead tissue on leaves, often with a yellow margin; with heavy infection the leaves dry up. Do not confuse it with leaf miner damage.

The source says: it can be unsightly but is not seriously damaging.

When to look

Summer – fall

How to protect

  1. Prevention
    • In fall, rake up fallen leaves and burn or compost them; this reduces spores in spring.
    • The cultivars 'Briotii' and 'Fort McNair' are resistant.
  2. By hand fallCollect fallen leaves in fall. Chemical control is usually not needed, and spraying large trees is impractical.
Horse chestnut leaf blotchdisease · summer – fallLow risk

What you will see

Irregular brown patches of dead tissue on leaves, often with a yellow margin; with heavy infection the leaves dry up. Do not confuse it with leaf miner damage.

The source says: it can be unsightly but is not seriously damaging.

When to look

Summer – fall

How to protect

  1. Prevention
    • In fall, rake up fallen leaves and burn or compost them; this reduces spores in spring.
    • The cultivars 'Briotii' and 'Fort McNair' are resistant.
  2. By hand fallCollect fallen leaves in fall. Chemical control is usually not needed, and spraying large trees is impractical.

What you will see

White powdery patches on leaves, stems and flowers, often on the upper side of the leaf; leaves stunted or distorted.

When to look

From spring onwards

How to protect

  1. Prevention
    • Plant in sun; avoid still, enclosed spots by a wall or fence.
    • Water in dry spells; do not overdo nitrogen feeding.
    • Thin the crown and water at the roots in the morning.
    • In fall, collect and destroy affected fallen leaves (reduces spores in spring).
  2. By hand as soon as noticedCut off affected shoots straight away and clean your tools. Fungicides are not recommended.
Powdery mildewsdisease · from spring onwards

What you will see

White powdery patches on leaves, stems and flowers, often on the upper side of the leaf; leaves stunted or distorted.

When to look

From spring onwards

How to protect

  1. Prevention
    • Plant in sun; avoid still, enclosed spots by a wall or fence.
    • Water in dry spells; do not overdo nitrogen feeding.
    • Thin the crown and water at the roots in the morning.
    • In fall, collect and destroy affected fallen leaves (reduces spores in spring).
  2. By hand as soon as noticedCut off affected shoots straight away and clean your tools. Fungicides are not recommended.
More about this problem
Sources (3)

Frequently asked

Quick answers.

When does red horse chestnut flower?

In May; the flowers are pink or red.

Does red horse chestnut tolerate shade?

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

How much space does red horse chestnut need?

At maturity 26 ft 3 in–39.4 ft wide and 32.8 ft–49.2 ft tall; recommended spacing 26 ft 3 in.

Powdery mildews — what can you do?

Plant in sun; avoid still, enclosed spots by a wall or fence. Cut off affected shoots straight away and clean your tools. Fungicides are not recommended.

Horse chestnut leaf blotch — what can you do?

In fall, rake up fallen leaves and burn or compost them; this reduces spores in spring. Collect fallen leaves in fall. Chemical control is usually not needed, and spraying large trees is impractical.

Sources (15) Checked 24 October 2026

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