How do you grow an aquatic bonsai?

First, choose a suitable glass vase , sized for your bonsai. For continuous irrigation, use a mixture of water and a few drops of fertilizer , which makes it slightly acidic and promotes growth. Using plain water would quickly cause the plant to wilt, as it would not be able to provide the nutrients it needs to thrive. For proper nutrition, it's best to use four drops of fertilizer for every 500 ml of water . This liquid should constantly moisten the plant's roots and should be replaced once a week . To thrive, a bonsai should be placed near a well-lit window, preferably facing south. This allows bonsai plants to grow rapidly and develop new, strong roots.

Hydroponic Bonsai Cultivation: Some Considerations

The challenge with growing woody plants hydroponically —unlike other types of plants—is the need to support the tree , which, by its very nature, will grow large and, if not properly treated and cared for, will tend to topple over. Therefore, the best way to begin hydroponically growing a bonsai—or other woody plants—is to place the tree in a small container on an inert substrate, which will provide the plant with the right support. In this specific case, the size of the container will determine the size of the bonsai tree ; the larger the pot, the larger the tree.
One of the most effective, practical, and suitable hydroponic growing methods for bonsai is DWC (Deep Water Culture), which allows you to halve the growth time of this type of plant, solving the main critical issue typical of bonsai cultivation: vegetative growth times .

This method—in addition to being effective—is also quite simple, requiring the purchase of an irrigation container and an air pump to spray the nutrient solution onto all the roots.
In this system, the roots of the bonsai plants are immersed directly in water, and the nutrient solution is sprayed through a special air pump and two porous stones, which allow for continuous oxygenation of the nutrient solution and uniform mixing of the fertilizers. It is precisely this system that drastically shortens the growth time of bonsai plants, keeping management and maintenance costs low: with this method, in fact, no submersible pumps are required , and therefore, electricity consumption is significantly lower.

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