Aesculus chinensis - Chinese horse chestnut

Aesculus chinensis, also known as the Chinese horse chestnut tree, is a Chinese cousin of the more well-known and widely planted Common Horse Chestnut. It is a large deciduous tree with a spreading habit and palmate leaves, which are finer than those of the common chestnut. It offers a beautiful spring flowering with upright panicles of white flowers, touched with yellow and red. This Chinese chestnut tree also produces large fruits covered in soft thorns. These fruits contain one to three large, shiny brown seeds, similar to "conkers".

Aesculus chinensis belongs to the Sapindaceae or Hippocastanaceae family according to different classifications. It differs from the Indian chestnut tree in its larger size, slower growth, narrower leaflets, shorter inflorescences, flowers tinged with red and yellow at the base, and better resistance to very cold winters. The Chinese chestnut tree is naturally found in mixed forests in mountainous regions of China. This tree, which grows relatively slowly but reaches an imposing size, can reach heights between 15 and 25 metres. It has a wide, spreading crown and remarkable deciduous foliage. Its leaves are compound palmate, with 5 to 7 lanceolate to elliptical leaflets, measuring approximately 20 to 40 cm in length. They are dark green and glossy on the upper surface, while the lower surface is paler. The leaf edges are toothed. The leaves turn yellow in autumn before falling. In spring, typically in May, the tree is covered in attractive flowers. Its flowers are grouped in upright panicles measuring between 10 and 25 cm in length. Each flower has a diameter of 2 to 3 cm and is white with a yellow and red base. They are nectar-rich and attract bees and butterflies. After pollination, the tree produces spherical to oblong fruits covered in soft thorns. These fruits contain 1 to 3 brown, shiny seeds commonly known as "chestnuts". The fruits ripen in autumn and may persist on the tree during winter. The bark of the Chinese chestnut tree is grey-brown and smooth when the tree is young. With age, it becomes rougher and fissured, adding an interesting texture to the trunk.

The Chinese chestnut tree prefers rich, well-drained, slightly acidic soils, although it is quite adaptable. It can be planted as a standalone specimen in a well-cleared location, on a large lawn, or as a shade tree. It also looks good at the edge of a large property overlooking the countryside. Consider its future growth before planting it in the garden. This tree can be integrated into a themed garden, such as an Asian garden or a garden of native plants from China, in association with other plants native to this region. Particularly Japanese maples, Camellias, and Fargesia bamboos, for example, under the Chinese chestnut tree or in a separate bed.