How do bonsai get through the summer? Neither drought, waterlogging, scorching sun nor deep shade is suitable
For bonsai, high summer temperatures and waterlogging are both disasters; drought, waterlogging, scorching and shade are all unsuitable, and protective measures must be taken. 1. Drought. When a tree stump is planted in a pot, whether it is a deep pot or a shallow pot, the soil is always limited, and the water it contains is also limited. If you water it when you think of it and don't water it when you don't, sometimes leaving it alone for several days in a row, and only once you notice the leaves wilting do you quickly replenish water, the leaf surface then returns to normal. This is a reaction of the stump adapting to its environment, but if this goes on for a long time, the excessively strong transpiration will eventually make the stump seriously ill and difficult to cure, and it will die of dehydration. Bonsai: Layout format characteristics of water-surrounded landscape bonsai. 2. Waterlogging. You may mistakenly think that watering frequently during high temperatures is beneficial to the growth of the stump, not realizing that several times a day makes the pot soil too wet, the root system stays in an anaerobic respiration state for a long time, too much alcohol accumulates, and the stump's root system loses its ability to absorb water, inorganic salts and minerals, ultimately drowning to death. Generally speaking, in summer or during drought, it is best to water once in the morning and once in the evening.
3. Sunscald. When the ambient temperature exceeds 28°C, bonsai should be given shade protection; otherwise, the amount of water the stump obtains from the soil is far less than the water lost through transpiration. In mild cases, the leaf edges are scorched and withered; in severe cases, the stump itself is scorched, badly damaged and dies. Bonsai: The seven major categories of bonsai, each pot so beautiful! 4. Sudden shade. Usually, some tree species prefer shade, so shade measures should be taken. For example, rhododendrons, camellias and the like mostly prefer shade. To avoid high-temperature damage, when the ambient temperature exceeds the maximum temperature the stump can tolerate, the bonsai should be moved to a lower-temperature area with weaker light, about 2°C lower, to benefit the stump's growth. But if it is suddenly moved indoors or to a lower-temperature area, within a few days the leaves will naturally fall off and the stump will shrivel and die.
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