Indian Horse Chestnut, Himalayan Conker
Indian Horse Chestnut is of common along the Western Himalayan Low-lands between 2,000 and 3,000 metres. It is an attractive tree with plentiful white blossoms during May and June. The leaves are also ornamental and form a beautiful canopy. In the British Isles it is popular in many parks and estates where it was in introduced in the mid 19th. It is a deciduous Tree, growing to 25m, growing in moist well drained soils. Because of its large leaves and stalks it is best suited to large sized Bonsai.
Informal Upright, Slanting
It like a full sun position.
Water well through out the growing season. It dislikes the pot going dry or getting too water logged, to ensure that pot surface dry out between waterings. Leaf burn occurs easily but does not harm the tree excessively.
Feed biweekly early spring to early summer. Use a low yield Bonsai feed, in the region of N:P:K 5:5:5 or lower. High yield fertilisers will vastly increase leaf-size.
Leaf and Branch Pruning:
As soon as a few small leafs emerge on the shoots, pinch out lead bud. This make the plant concentrate on new growth and helps maintain small leaf size of conkers.
Re-potting & Growing Medium:
Repot young plants every years, every 3-5 years in older plants, in spring. Use a well drained soil, 1 part Akadama and 1 part Pumice.
Conkers are shaped with pruning, as the branches are thick and ungainly. If required you can always use wire in the Autumn just as sap starts descending, but ensure that you use a raffia or protect the bark in some way as it scars easily.