Aesculus hippocastanum
Horse chestnut
Common names: Common horse chestnut, Chestnut
Photo: Stephan van Helden · CC BY-SA 4.0 · Source
This description was machine-translated.
Description
The horse chestnut is an imposing large tree that can reach up to 25 m in parks, avenues, and large gardens. From mid‑May to early June (week 20 to 22) it displays striking white flower spikes that attract many insects. In autumn the spiny fruit capsule matures with glossy brown chestnuts, which are popular for crafts but are poisonous when raw. Seeds, bark, and leaves contain bitter substances and other toxic compounds; therefore, extra caution is advised with children and pets, and the chestnuts should not be eaten. The mining moth is a widespread problem that causes the leaves to appear brown and dry already in late summer, without seriously weakening the tree.
Care instructions
Plant the horse chestnut only when ample space is available, as the canopy and root system require several meters of clearance from paths and buildings. A sunny to semi‑shaded location with deep, fresh soil allows it to grow most vigorously. In the first years after planting, water regularly during dry periods; thereafter the tree tolerates well without supplemental water. Collect fallen autumn leaves promptly and compost them, which reduces pest pressure from the mining moth in the following year. Pruning is rarely necessary for mature trees; remove only dead or diseased branches.
Soil & site
Soil pH
Soil type
well-drained, loamy, nutrient-rich, moist
Feeding
Medium feeder
Pruning
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