A bonsai is a miniature tree that is grown in a tray. Despite its size, it has the same needs as any tree that grows on the ground; that is, it needs water, more or less direct exposure to the sun to grow and food.
This food should be given to them throughout the growing season, from spring to late fall. But, How to fertilize a bonsai correctly?
Today you can find fertilizers for practically all types of plants, also for bonsai. These fertilizers contain the nutrients you need most, which are nitrogen (N), phosphorus (P) and potassium (K), and depending on which one they can also include other microelements (calcium, iron, manganese, etc.). However, we do not always acquire the ones we need the most. Sometimes it can be the case that we acquire one that favors flowering more than growth, when we are more precisely interested in the plant growing, or vice versa.
To avoid this, we have to take into account that nitrogen is responsible for making plants grow; phosphorus is what helps to form new roots, produce flowers and fruits, and potassium contributes to flowering and fruiting, as well as the maturation of woody trunks.
Taking this into account, it will not really matter what type of fertilizer we use (liquid or granular), but Yes, it will be necessary to read and follow the instructions specified on the product packaging to avoid the risk of overdose. In the case of using granulated fertilizers, it is advisable to use compost baskets thanks to which it will remain in place.
Can other fertilizers be used? Of course. It is not mandatory to use only bonsai fertilizers; What's more, organic fertilizers can be used without problem or combining the two (once one, the next another). This will ensure that the plant receives all the nutrients it needs.
More details on the subject are necessary, in order to be more useful