The need for water
From BonsaiWIKI
Water in the bonsai soil provides the tree with moisture to replace that lost through the leaves' transpiration during photosynthesis (during the day) and respiration (at night). The demand for water increases with temperature to the point at which photosynthesis stops. Water is also lost through evaporation from the surface of the bonsai container, which is accelerated by wind and low humidity conditions. On windy days be especially attentive to your trees.
Specific water needs depend on so many variables that it is impossible to make any general statement about the exact frequency of watering, but it is the general practice to water bonsai deeply, and to monitor the soil moisture level frequently for the need to water.
Overwatering can be just as detrimental as underwatering your bonsai.
| Watering - the Hardest Skill to Master |
| Watering Tips: The need for water | Monitoring soil moisture | Species & water | How to water | Learning to water |
| Watering Tools: Watering can | Hose-end sprayer | Drip watering | Dripper | Mister | Pump sprayer |
| Watering problems: Overwatering | Underwatering | Seasonal concerns | Watering when it rains | Bonsai not using water |
| Watering terms: Water quality | pH | Pollution | Chlorine | Chloramine | Root rot | Poor drainage | Humidity | RH | Mist |
