Tree · Sapindaceae familyornamental and medicinal · also in Medicinal herbs
horse chestnut
Aesculus hippocastanum
In short a 10-second read
Horse chestnut (tree) grows to 20–25 m tall and 15–20 m wide when mature. It grows best in full sun to part shade, in average to moist soil. It flowers in May; the flowers are white. Hardy to −34 °C.
× spread 15–20 m
Where to plant
Sun, soil, frost.
It grows best in full sun to part shade, in average to moist soil. Hardy to −34 °C.
Sun
Tolerates several positions — choose to suit the rest of the garden.
Soil and water
average to moist · watering: moderate
Soil: loamy, clay, humus-rich
Frost
It copes with a normal winter outdoors.
How much space it takes
Mature size.
The mature plant next to a person (175 cm).
Next to a person
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
What to do and when.
Months for Central Europe. The line shows the current month.
The year at a glance
Flowers
May · white
Pruning
No pruning needed — just remove dead or damaged parts (February–March).
Planting
container plant: October–April; bare-root: October–March; root-balled: October–March
Winter protection
not needed
Overwintering
It copes with winter on its own.
It overwinters outdoors without protection, hardy to −34 °C.
- Needs no protection
- Hardy to −34 °C
- Deciduous — bare in winter
Frequently asked
Quick answers.
When does horse chestnut flower?
In May; the flowers are white.
Does horse chestnut tolerate shade?
It tolerates part shade (3–6 hours of sun), but not full shade.
How much space does horse chestnut need?
At maturity 15–20 m wide and 20–25 m tall; recommended spacing 1500 cm.
Does horse chestnut survive winter outdoors?
Yes, without protection, hardy to −34 °C.
Where the data comes from
The data is indicative — we are still comparing it with further sources. Last checked 18 October 2026.
Show sources (16)
- Slov-lex — nariadenie vlády SR č. 449/2019 Z. z.
- Pergl J. et al. (2016) Black, Grey and Watch Lists of alien species in the Czech Republic, NeoBiota 28 — Appendix
- Nehring S. et al. (2013) BfN-Skripten 352 — Schwarze/Graue Liste
- GBIF — Aesculus hippocastanum
- NC State Extension
- Van den Berk
- GBIF Backbone Taxonomy (species/match)
- Wikipedia (EN)
- RHS - Aesculus hippocastanum
- Missouri Botanical Garden - Aesculus hippocastanum
- RHS - Mulches and mulching
- EMA/HMPC - Hippocastani semen (herbal medicine)
- EMA/HMPC - monografia Hippocastani semen (EMA/HMPC/628242/2018)
- RHS - Shrubs and trees: light pruning
- RHS - Trees and shrubs: planting
- Clemson HGIC - Planting Trees Correctly
Similar plants
Have a look at these too.
Uses · horse chestnut
What it is used for.
Traditional use according to the monograph of the European Medicines Agency (EMA).
What it is for
discomfort and heavy legs with minor venous circulation problems
bruises (local swelling and haematoma)Source: EMA/HMPC monograph. Not medical advice. EMA monograph
Flowers
Cautions
- This is not medical advice. The information summarises the EMA (European Medicines Agency) monograph on licensed herbal medicines, not home preparation; ask a doctor or pharmacist about dosage and suitability.
- adults only
- not recommended during pregnancy or breastfeeding
- see a doctor if symptoms persist or get worse
- If you have a known allergy to plants of the Sapindaceae family, consult a pharmacist.
- If pregnant or breastfeeding, for children and when taking medicines, always consult a doctor or pharmacist.