Watering, the most important process to grow a bonsai tree. Water supply is essential for a bonsai tree that is grown in a limited space of a pot. Many people say it takes three years to attain the watering technique. There is no perfect manual for watering. Growers are required to pay full attention to various aspects, such as weather, season, tree features, term of cultivation, soil and pot size, and decide the frequency of watering and amounts of water to give. Watering is intended not only to replenish moisture but to send fresh air into soil.

translated by Kyodo News