Watering Bonsai trees

The most complicated part of taking care of your Bonsai is to water it properly.

Watering Bonsai trees

How often a tree needs to be watered depends on several factors (like tree species, size, size of pot, time of year, soil-mixture and climate), which means that it is impossible to say how often you should water Bonsai. However, understanding a few basic guidelines will help you to observe when a tree needs to be watered.


Watering Bonsai trees

As mentioned above, how often to water your Bonsai depends on too many factors for us to give an exact time schedule. Instead, you need to learn to observe your trees and know when they need to be watered. Using the following basic guidelines will help you to water right.
Water your trees when the soil gets slightly dry. This means you should not water your tree when the soil is still wet but only when it feels slightly dry; use your fingers to check the soil at around one centimeter (0.4’’) deep. Once you get more experienced you will be able to see (instead of feeling) when a tree needs watering.



Never water on a routine. Keep observing your trees, one by one, instead of watering them on a daily basis.Use the right soil-mixture. The soil-mixture greatly influences how often trees need to be watered, for most Bonsai trees a mixture of akadama, fine gravel and potting compost mixed together in a ratio of ½ to ¼ to ¼ should be fine. However, use a mixture that retains more water (by using more potting compost) when you cannot water your trees that regularly.
It does not really matter at what time you water a Bonsai; however, try to avoid watering during the afternoon, when the soil has been warmed up by the sun and will cool down rapidly when using cold water.


As explained, a tree should only be watered when the soil gets slightly dry. When the tree does require water though, it needs thorough soaking so the entire root system is wetted. To do so, keep watering until water runs out of the drainage holes, and repeat the process about ten minutes later.
Water a tree from above using a watering can with a fine nozzle; this will prevent the soil from being washed away. Using collected rain water is better (as it doesn’t contain added chemicals), but when this is not readily available there is no real problem in using normal tap water.