A Detailed Guide to the Latest Scientific Fertilization Methods for Chinese Ash (Fraxinus chinensis) Bonsai

During the growing season, apply light fertilizer frequently. To make it easier for the tree to absorb and to avoid wasting fertilizer solution, it is best to apply once every 5-7 days. Fertilization is generally done on a sunny afternoon when the potting soil is on the dry side, and after application, water to rinse the leaves. On rainy days when the potting soil is wet, the roots cannot breathe well, and after fertilization the roots do not absorb it easily; strong sun: even in the scorching heat of the dog days, as long as water is kept up, under high temperatures of 380c-400c and intense sunlight, it will still be seen sprouting and growing, and the branch tips rarely show self-pruning, which shows its adaptability is especially strong.

Trees, like people, need oxygen and nutrients, and like people they need to eat every day. The fertilization principle for Chinese ash is to eat small meals often. Generally the fertilizer used is compound fertilizer, and a chlorine-free compound fertilizer should be chosen. If the leaves turn yellow, a small amount of ferrous sulfate is also needed. When fertilizing, it should be done according to each tree, and cannot be distributed evenly: those with good growth should be given less or not at all, while those with weak growth should be given more and more frequently. According to the type of growth, treat each one differently.

Fertilizer should be applied in holes, that is, dig a trench, put the fertilizer inside, and then cover it with soil. This helps the fertilizer work well. Each time you fertilize, generally use 1 kg for a large tree and 0.5 kg for a small one. Fertilization should be even, and you should keep some distance from the tree, not too close. Fertilization is divided into one application of nutritional fertilizer in winter each year, one application of leaf-growing fertilizer in spring, and one application of growth fertilizer in summer.

The simplest way to judge whether it lacks water, fertilizer or sunlight is to observe the sprouting of its new shoots:

When fertilizer, water and sunlight are sufficient, the branches sent out from the treetop are thick and strong, and the tender branches and leaves are purplish red, gradually turning green; when insufficient, the branches sent out are thin and weak, and the tender leaves are pale green. 5~7 days before picking leaves and pruning branches and buds, a application of cake fertilizer water must be given. In the peak growing season, new buds are seen sprouting just three days after heavy pruning. After the new buds sprout, another application of cake fertilizer water should be added, with a water-to-fertilizer ratio of 8:1. The more full the branch pads become, the more the number of prunings can be appropriately increased.