what can I do, my bonsai most have dry branches, I would like a thank you advice
the desiccation of the branches of a bonsai-bred plant is quite frequent among the neophytes, and it is one of the main reasons why when we are about to learn the art of bonsai, we often follow the advice to start with low-cost plants, possibly self produced from seed or cuttings, so that any "losses" do not affect our portfolio too much; the cost of 10 seedlings produced by cuttings is decidedly low, just a little land and a little fear, while the cost of a bonsai that has already been worked, which may even have a few tens of years, can obviously be very high, and the death of such plant can quickly make us decide to stop growing bonsai. Since you don't tell me what kind of plant it is, I can only give you some general indications. Consider that the saplings grown with bonsai are grown in very small pots, with the root system being periodically pruned and shortened, so as to force the plant to a controlled development, with very short internodes. The earth contained in a bonsai pot usually consists of a few handfuls, so it is essential to provide the correct watering, and place the plant in a suitable place; For this reason the watering of a bonsai is a very important cultivation practice: the soil must often be kept fairly moist, or in some plants watering must take place as soon as the soil has dried. Therefore, in summer, with a plant placed on the terrace (to give an example) it could be necessary to water every morning, because the hot and dry climate can completely dry the earthen bread in the pot, even for a few hours. Similarly, if we water too much, the result will be to "suffocate" the sapling roots, causing serious damage to the plant, and stimulating the development of fungal diseases, which can also be very harmful to a plant cultivated with bonsai. The desiccation of the branches can occur due to both these problems, which can also occur associated with: plants that are left without water for days, and are subsequently watered excessively for a few days at a time. Another factor that we will have to follow in considering whether or not to water our bonsai is the climate and exposure to the sun: a small bonsai pot, placed on the terrace in full sun in summer, without rain, will take a few hours to dry; in fact most of the bonsai plants are kept in partial shade in the summer, so that the dry heat does not force us to water them every 3-4 hours. On the contrary, a vase kept in the shade, at a particularly rainy time of the year, may need to be moved to an area where it does not receive rain, so that the soil can dry out between two waterings.