First of all, black pine likes sunny and ventilated environment, which is cold-resistant, cold-resistant and drought-resistant. Black pine is barren and does not like big fat. Autumn is the season when pine buds grow and branches thicken. The pancake fertilizer solution can be applied several times to make it thrive. The germination of black pine is not so vigorous, so it is not appropriate to prune it too much. The needles of black pine are longer. In order to shorten them, the Japanese bonsai session not only controlled water and fertilizer during the growth of new leaves in spring, but also created a "short-leaf method", including cutting tender branches, thinning buds and picking old leaves. The specific operation is as follows: in July and August, all the new branches growing in that year will be cut off. Because plants have the ability to recover themselves and find balance, a second round of new buds will grow on the branches from August to September. Later, with the gradual cooling of the climate, the growth of new buds and leaves was inhibited. The remaining old leaves were cut off from June 165438+ 10 to June 65438+February, so the plants left short needles for the second round of growth, which is the best viewing period of the black pine bonsai.
Move to a cold room in winter, and don't let the soil freeze. If the temperature is too high, it will be unfavorable for the growth of the next year. You can also bury the pot in the outdoor shelter from the wind and the sun for the winter. Turn over the pot two to three years before spring planting. When turning the pan, remove the original soil from 1/3 to 1/2 and add some new soil. Pot soil should be loose, breathable and well drained.