Although it may seem strange, we must be careful when choosing what type of water we use to water a bonsai. The factor that determines that the type of water is more or less correct is its chemical composition, that is, what elements the water has and how they can affect the bonsai.
In many books and guides on the care of these plants, it is specified that the best water to water a bonsai, above the rest, is rainwater. This water has a very balanced composition and nourishes the plant properly. But, as is logical, we will not always have rain water, unless you have a cistern or rain catchment facility, if you have access to this type of water better than better, your bonsai will thank you.
To conserve this water, clay or even wooden containers are recommended, avoiding metal or plastic containers. It is always necessary to add a few drops of insecticide, since due to its stagnation to store it, it can lead to the appearance of mosquito eggs or other insects.
For those who do not have access to it, bottled water is recommended. This type of water, of lower quality than rain, has an acceptable balance in terms of chemical elements. The main drawback is its price and having to transport it from the point of sale. You can also use river or lake water that is close to your growing place, this water is very similar to rainwater and highly recommended for your bonsai.
Water not recommended for watering a bonsai
Lastly, using tap water is not recommended at all. This type of water can contain a lot of chlorine or fluorine and this does not benefit the bonsai, but rather seriously damages it. Although it is the easiest and cheapest option, it can be very expensive for our bonsai and your health, so avoid using it as much as possible.
Remember that irrigation is a very important part of your bonsai, so the water with which you water it is just as important.
