The new leaves of Wei Zi bonsai are all yellow during the Spring Festival.

Second, the color of the leaves above the dry land is normal, and the leaves below gradually dry up and fall off. This is because the soil is too full or not watered for a long time, which leads to the aging of the lower leaves and branches, so it is necessary to water it properly to keep the soil moist. Third, the leaves of flowers lacking fertilizer are thin and yellow. This is because the big potted plants are small or haven't been changed for a long time, and there is not enough soil. It is necessary to gradually increase water and fertilizer and change pots in time. Fourth, the leaves of the fertilizer-damaged flowers are uneven and not stretched, the new leaves are thick, and the old leaves turn yellow. Qin Ying watered them, suspended fertilization, sprinkled some seeds in the pot, and pulled them out after emergence, so as to consume the fertilizer in the pot and restore the normal growth of flowers and trees.