How to maintain a good tree stump bonsai in low winter temperatures?

1. Appropriate amount of water, do not apply fertilizer

Winter watering should be better dry than wet, and the soil should not be watered until it is white. To be watered at noon, it is better to water thoroughly at once, not at night, otherwise it is vulnerable to freezing damage. For conifers, wax leaves and thick, green landscape trees, combined with spraying water to wash the leaves is also very good. Bonsai trees should not be fertilized in winter, but 15 days before winter, it should be combined with weeding and loosening soil, killing diseases and insect pests, and applying a fertilizer mainly composed of phosphorus and potassium, so as to strive for strong plant growth before winter and improve the ability to protect against cold.

2. Kill diseases and insect pests without pruning

Winter temperature is low, growth vitality is low, generally not suitable for pruning.

Disinfestation in winter can reduce the damage of diseases and insect pests in the following year. Before winter, the whole tree should be sprayed with Bordeaux liquid of the same amount to prevent diseases. It is found that there are caves in the tree trunk, which can be blocked with cotton wool, or coated with mud mixed with lime powder and sulfur powder to kill the eggs of overwintering insects. The underground part (including basin soil) can be diluted and irrigated with a mixture of dimethoate and dichlorvos.

3. protect the light and prevent the cold

Different plants need different light time, such as coniferous pine and cypress, evergreen fine leaf banyan, sparrow plum, mountain fingernail and so on, and it is ideal to shine for 8 hours a day. For cold-resistant Milan, five-colored plum, Jiuli incense, etc., when the temperature is below 6 degrees Celsius, cover with plastic film, or move to the sun.

How to maintain the bonsai of tree stump in cold weather

Winter is the frequent season of bonsai death, whether watering or pruning, a little improper will cause the death of bonsai, so we need to pay special attention. The succulent garden will explain the points for attention for you.

1. Appropriate amount of water, do not apply fertilizer

Winter watering should be better dry than wet, and the soil should not be watered until it is white. To be watered at noon, it is better to water thoroughly at once, not at night, otherwise it is vulnerable to freezing damage. For conifers, wax leaves and thick, green landscape trees, combined with spraying water to wash the leaves is also very good. Bonsai trees should not be fertilized in winter, but 15 days before winter, it should be combined with weeding and loosening soil, killing diseases and insect pests, and applying a fertilizer mainly composed of phosphorus and potassium, so as to strive for strong plant growth before winter and improve the ability to protect against cold.

2. Kill diseases and insect pests without pruning

Winter temperature is low, growth vitality is low, generally not suitable for pruning.

Disinfestation in winter can reduce the damage of diseases and insect pests in the following year. Before winter, the whole tree should be sprayed with Bordeaux liquid of the same amount to prevent diseases. It is found that there are caves in the tree trunk, which can be blocked with cotton wool, or coated with mud mixed with lime powder and sulfur powder to kill the eggs of overwintering insects. The underground part (including basin soil) can be diluted and irrigated with a mixture of dimethoate and dichlorvos.

3. protect the light and prevent the cold

Different plants need different light time, such as coniferous pine and cypress, evergreen fine leaf banyan, sparrow plum, mountain fingernail and so on, and it is ideal to shine for 8 hours a day. For cold-resistant Milan, five-colored plum, Jiuli incense, etc., when the temperature is below 6 degrees Celsius, cover with plastic film, or move to the sun.

How to prevent freezing of tree stump bonsai in winter

Balcony tree stump bonsai needs special care in winter, anti-freezing is one of the key points, today let's talk about how to prevent tree stump bonsai from freezing in winter, let's take a look.

Balconies generally face south, but there are also many facing north. If the balcony faces north, under 0 ℃ in winter, all kinds of tree stump bonsai should be moved indoors to prevent frost damage. And the balcony facing south, the temperature is generally higher than the balcony facing north, and the light is also better, so, in addition to some cold-fearing tree species, others can make it dormant normally in a low-temperature environment, so that it can enhance its cold resistance and kill diseases and insect pests.

What we need to remind everyone is that we should pay attention to the attack of strong cold air in winter, pay special attention to the weather changes, and be sure to move all the tree stump bonsai indoors before the arrival of the strong cold spell (- 5 ℃). Even hardy plants are no exception.

Some people will also say that hardy plants do not have to be frostproof. The reason why hardy plants can withstand cold is that their roots grow underground indefinitely in nature. We all know that the underground temperature is relatively stable, and the ground freezes again, but the underground remains the same. Just like the well water is warm in winter, hardy plants benefit from the protection of ground temperature, even if the aboveground branches are frostbitten or even frozen to death. As long as the root system is not frozen, it will grow again next spring. And the potted plants on the balcony are different, the stump bonsai is generally shallow, the pot is shallow, and the roots are exposed. In winter, the cold wind blows under the basin and the snow and frost on the basin. The whole pile scene is like being placed in a large freezer. if it encounters a strong cold spell again, it is bound to completely freeze the pile roots. once the pile root is frozen, the plant will become a tree without roots and will soon perish.

There are many such examples. A few years ago, East China was hit by a strong cold spell not seen in many years, and the temperature suddenly dropped to-10 ℃. Many people neglected to guard against it, resulting in many tree stump bonsai that had been maintained for many years and had high appreciation value. They froze to death because they were unbearable. In particular, the pile scenery raised on the balcony almost froze to death at 60%. Even the hardier elm trees are doomed. This lesson is very painful.

And the degree of loss of ground or potted plants on the ground is much lighter than that on the balcony. Due to the windy and dry balconies of high-rise buildings in winter, it is necessary to spray water on the branches irregularly according to the weather conditions, especially to take good care of some old piles with more old and withered faces. The branches should not be too dry or even lose water for a long time. Otherwise, its branches may not be able to withstand the cold dry wind and lose their strips and pieces, and the serious tree trunks will partially wither. In particular, Finch plum is more likely to lose its branches due to dehydration this season. Special attention should be paid and should not be neglected.

Balcony pile maintenance is more difficult than placing ground maintenance, often without success, the key is that the balcony lacks the climatic conditions for the normal growth of tree stakes. Therefore, to transform the balcony microclimate and cultivate an environment suitable for the living habits of tree stumps is the only way to raise a good pile scene on the balcony.

First, balcony climate analysis and transformation.

1, balcony climate characteristics analysis: balcony ventilation, good light, little waterlogging, is favorable; wind from all sides, a lot of water consumption, dry air, lateral lighting, summer high temperature, cold in the middle of winter, is a disadvantage. Moreover, these unfavorable weather, also along with the balcony level heightens and aggravates. Balcony climate is also different due to different orientation: South balcony, long sunshine time, high temperature; north balcony, short sunshine time, low temperature; east balcony, accept morning sunshine, temperature change greatly; west balcony, accept afternoon sunshine, the temperature rises suddenly; other climate changes biased toward the platform are close to the positive balcony at the same level.

The above analysis points out that the focus of the transformation of the balcony should be placed on adjusting temperature, increasing humidity and controlling wind damage, among which increasing humidity is the key point.

2. Specific measures to transform the balcony microclimate:

(1) shading: vine flowers and trees (such as grapes and honeysuckle) can be planted in a corner of the balcony. ), climb to block the light, or use bamboo curtain, Reed rod curtain, thread net curtain, hang shade, and change the scorching sun into flower shade. You can also hang a white curtain (about 1 meter wide) on the eaves of the balcony at noon when the sun is strong. If there is no shade and no preparation, the pile scene should be moved to the shade when the sun is strong.

(2) Wind shield: open balconies on three sides, large glass windows should be installed at both ends to shield the wind. Or with wood, cardboard and other closed balcony west, north end, east, south end can be combined with hanging shading curtain to weaken the wind. Because the wood board and cardboard are opaque, they can only be used to close the north end of the east and west balcony and the west end of the south and north balcony, so that one does not affect the light, and the other can block the westward and northerly wind and weaken the air convection. The balcony is not sealed face to face, so that the pile scene can accept the sun and rain. Secondly, we should pay attention to close the doors and windows of the inner wall of the balcony, cut off the air channel, reduce the flow rate, and prevent wind damage.

(3) ground watering and moisturizing: (1) install a thin water pipe equal to the length of the balcony above the inner wall of the pile balcony or above the balcony, and install several thin sprinklers on the thin water pipe (the water pipe is installed on the inner wall, the nozzle mouth faces down, the water pipe is installed above the railing, and the nozzle mouth faces down,), connect the tap water pipe, open the valve and spray water several times a day except in winter and early spring, so that the balcony is often in a wet state. (2) the balcony can be covered with cinder ash or fine sand about 5 cm thick, covered with bamboo and wooden pedals or set aside for the sidewalk, so that it is easy to walk, wet through the coal ash (river sand), and the water in the wet coal ash gradually evaporates, increase the humidity of the balcony; (3) spread sacks, thick cloth or straw mats on the balcony floor, water thoroughly, evaporate and moisturize; (4) sprinkle water directly on the balcony to moisturize. (5) in the spring and autumn when there is a large amount of water consumption, you can hang some thick wet cloth on the balcony to distribute water and increase air humidity; (6) properly place the pile view basin to make the water released by potted soil and branches and leaves moisturize each other.

(4) spraying water on branches and leaves: in the season when the evaporation of water in branches and leaves is large, sprayers should often be used to spray water on the pile scene to keep the branches, dry and leaves moist. Secondly, the pile view basin should be shelved in the balcony railing, so that the creation of the balcony microclimate effect.

The above several methods should be chosen flexibly according to their specific conditions and balcony conditions as well as different seasons.