What happens when bonsai leaves turn yellow and wither, and small leaved boxwood bonsai leaves dry u

Yellowing of leaves is the most common problem we encounter in the process of raising flowers, and a pot of flowers at the end of the pot suddenly appears inexplicably a few leaves slowly turn yellow and wither and fall, which makes people feel distressed. There are many reasons why the leaves of potted flowers turn yellow and fall, some of which are natural phenomena of the plant itself, such as tropical foliage plants such as Dripping Guanyin. After the leaves of these plants have grown for a certain period of time, the edges of the leaves will appear faintly yellow, losing the green of the past, such leaves have completed their mission, just cut off, because new leaves will continue to grow; However, the leaves of some plants appear yellowing during the normal growth cycle, which requires us to carefully find out the cause.

Causes and solutions of leaf yellowing.

In general, there are several reasons for the yellowing and falling of flower and grass leaves:

1. Water yellow. Excessive water and stagnant water in the potting soil will lead to root lesions and rot of the plant, and the symptoms are that the new young leaves are dark and dull, and the new shoots are atrophied.

Solution: control the water and loosen the soil in time to let the water evaporate as soon as possible.

2. Dry yellow. Contrary to water yellowing, it refers to the phenomenon of yellowing of plant leaves caused by lack of water caused by improper watering for a long time. For example, if the potting soil is too full and cannot be watered thoroughly, it is manifested that the color of the new leaves is normal, but the old leaves start to dry up and fall off from the roots.

Solution: Take out too much potting soil and water it thoroughly, or use the soaking method to let the potting soil absorb the water.

3. Fat yellow. Excessive fertilization makes the new leaves appear thick and unstretched, and the old leaves turn yellow and fall off.

Solution: Stop fertilizing, water frequently, or sprinkle some leafy vegetable seeds in the pot and pull them out when they germinate and grow to a certain height, so as to consume too much fertilizer.

4. Lack of fat yellow.

Long-term failure to change the potting soil, insufficient fertilization, or too small potting caused by the yellowing of leaves.

Solution: Apply fertilizer and water in time according to the needs of plant growth, change the pot and soil once in one or two years, and apply sufficient base fertilizer when changing the pot.

There are many reasons why bonsai leaves turn yellow and wilt.

Irrigate the roots with rooting powder and avermectin, and keep the soil breathable.

Then spray the whole plant with foliar fertilizer and supplement the appropriate light.

Small-leaved boxwood. What's the deal with bonsai leaves drying up?

Boxwood is a shrub plant that grows better in a warm and ventilated environment, this plant is not particularly strict with soil requirements and likes to grow in fertile soil, so what's going on with boxwood leaves drying up?

What is the reason why the boxwood leaves are dry.

Boxwood leaves are dry, it may be because the branches and leaves are too dense, very luxuriant, so that the consumption of nutrients will be accelerated, water requirements will become higher, if the water and fertilizer supplement is not timely, it will lead to the boxwood leaves dry up, at this time we also have to comb the branches, if there is a problem with the boxwood roots, we need to immediately check the situation of the roots of the plant, if the boxwood roots grow in a waterlogged environment for a long time, its roots will rot, at this time we must control the watering, to avoid the leaves dry out.

Boxwood leaves can also survive if they dry up, but we need to find the cause in time, and then solve it, so that the boxwood can recover, we can first cut off all the dead branches and rotten leaves of boxwood, so as to prevent the nutrient consumption rate too fast, but also to repair the roots of the boxwood, if the roots are rotten, to cut off the rotten position.

The treatment for yellowing and falling leaves of potted trees is to prune the roots and replant them.

1. Prune the root system.

Potted trees are not tolerant to stagnant water chain silver, when breeding potted trees, if watering too often, it will cause the plant to drop yellow leaves, at this time you need to immediately take out the potted tree from the potting soil, and then prepare a pair of sterilized sharp scissors, cut off all the rotten and blackened roots of the plant, and then spray disinfectant on the roots of the potted tree.

2. Replanting skillfully calls for height.

When replanting a potted tree, you need to prepare a pot with more drainage holes at the bottom, then spread a layer of perlite or broken tiles into it, and then fill half of the soil into the pot, and finally you can put the potted tree in it, and fill in the remaining soil, and water the potted tree once to promote its rapid potting.

After repotting the potted tree, it needs to be placed in a ventilated and breathable semi-shaded place for slow seedling, so that the plant can quickly adapt to the new environment, and after waiting for 1-2 weeks, the potted tree can be moved to a bright place, so that it can receive no less than 4 hours of light every day to promote the photosynthesis of the potted banyan tree.

How to grow potted trees

1. Soil conditions.

In the process of cultivating potted trees, it is necessary to prepare loose and fertile, deep soil, which can be mixed with humus soil, garden soil and peat soil, and in addition, in order to ensure that the fertility of the soil is abundant and the drainage is excellent, perlite and base fertilizer need to be applied to the soil.

2. Environmental conditions.

In the process of growing potted trees, they need sufficient sunlight, and they can be placed in a sunny place during maintenance, and shaded when the light intensity is high, in addition, they should ensure that the environment is well ventilated and the temperature is suitable for the growth of potted trees, and be careful not to move the plants at will.

3. Water and fertilizer management.

When maintaining potted trees, it is necessary to do a good job in water and fertilizer management, and water once after the soil is dry, keep the soil moist, but do not appear waterlogged, in addition, in the growth period of the plant, apply nitrogen fertilizer, phosphorus and potassium fertilizer as a supplement, or apply well-rotted organic filial piety fertilizer.

Potted flowers often appear during the growing season.

The yellowing of the leaves is mostly due to improper cultivation management. Here are a few examples of "yellowing".

1. Water yellow. Ponding of potting soil.

It is caused by a long period of wetness.

Lack of oxygen in the soil, so that partially.

The root system rots, and the ability to absorb water and fertilizer is weakened. It is manifested in the dark yellow and dull young leaves, and the top of the new shoots.

Atrophied, the branches are small yellow-green. This should be done in this case.

Loosen the soil, control watering, stop fertilization, and the heavy ones can be depotted and blown in the shade.

Dry the soil balls before potting.

2. Fat yellow. Due to excessive fertilization or excessive concentration, especially partial application.

nitrogen fertilizer.

Leaf yellow, manifested as:

The new leaves are thick and shiny, but.

Foliar concave and convex. If it is not stretched, the old leaves gradually turn yellow and fall off.

At this time, fertilization should be stopped and increased appropriately.

Watering to dilute.

nutrients, potted flowers.

Insufficient fertilizer and water or large pots, and senile or overdense roots in the pots will also make flowers.

The leaves of the plant become thinner and yellow, at this time should.

Change the pot and change the soil, usually when the rain arrives.

It is carried out at the beginning of summer.

3. Alkali yellow. Potted plants like acidic flowers, such as:

Camellias, Milan, smiles, rhododendrons

Jasmine, etc., often due to soil trends.

Caused by alkaline reactions.

Loss of green and yellowing. Performance begins with.

New leaves on the branches.

intervein, while. leaf veins, especially.

The main vein is still maintained.

The phenomenon of green, yellow and green is very obvious. With the aggravation of the degree of yellowing, the leaf veins gradually lose green, and then the whole leaf is white, the leaf edge is scorched, the leaf withered, and in severe cases, the branch tip withered, so that the whole plant died.

Acidic fertilizers. or acidic substances.

It can be improved, or alum fertilizer water can also be applied frequently.

4. Yin yellow. Flowers that like the sun, often caused.

Indoor lighting. Insufficient cause.

The branches and leaves are yellow, and the pot should be moved to at this time.

Ventilation and lighting outside. For a half.

Feminine flowers. Such as bamboo.

in bright light. The lower part will also make the leaves yellow, so avoid it.

In summer, when exposed to high temperature and strong light, it should be moved indoors or built.

Shaded storage. 5. Dry yellow.

Due to long-term lack of watering, or too little watering, the leaves are yellowed or brown ends, brown edges, and the old leaves are yellowed and fall off from the bottom up. However, new leaves generally grow normally, and should be supplemented when this phenomenon occurs.

water, so that the soil is no longer short of moisture.

6. Burn yellow. Potted flowers that like shade and dampness, such as spider plants

Evergreen, hosta, etc., if exposed to strong direct sunlight, the leaves also have brown ends, brown edges, this phenomenon occurs, the pot can be placed in the shade.

7. Damp and hot yellow.

Some potted plants that are not resistant to high temperature and humidity, due to.

Caused by poor ventilation and improper shading in midsummer.

Yellow leaves, such as. Hanging bell begonia.

This phenomenon occurs during the summer months. Therefore, high temperature and high humidity are also easy to cause.

Yellowing of leaves, this kind of yellowing of leaves can be prevented as long as you pay attention to ventilation and cooling, and the potting soil should not be too wet.

If it is a succulent potted plant, it should be exposed to more sunlight because it likes to be dry.

Add some soil to the complex, the pot soil is generally about a finger away from the edge of the flower pot, and then you may buy a jade tree, this kind of plant should be watered more, see dry and wet, is to wait for the pot to dry and then water, watering must be watered thoroughly, and then it is to bask in the sun, can not be placed in a dark place all day long, but do not expose to the sun in summer, pay attention to sun protection, fertilization to do not use, rest assured that the leaves will grow immediately.

Watering, basking in the sun, or repotting.

The flaky Dongdong you mentioned may be a scale insect, which can make the leaves of the plant appear locally yellow and dry, and finally make the plant die, mostly distributed in the leaf veins, causing the leaves to dry up, I have several pots of anthurium have died, because there is a period of absence. Manual control: In the process of cultivating flowers, if it is found that there are individual branches or leaves with scale insects, they can be gently brushed off with a soft brush, or combined with pruning, and cut off insect branches and leaves.

It is required to be brushed, cut, and burned in a centralized manner, and do not litter.

Pesticide control: according to the various occurrences of scale insects, spray pesticides in the peak stage of nymphs. Therefore, most nymphs hatch for a short time, the body surface has not yet secreted wax, and the shell has not yet formed, and it is still easy to kill with medication.

Spray once every 7-10 days, 2-3 times in a row. It can be sprayed with 40% dimethoate 1000 times, or 50% malathion 1500 times, or 255 imithion 1000 times, or 50% dichlorvos 1000 times, or deltamethrin 3000 times. Protection and exploitation of predators:

For example, the Australian ladybug, the big red ladybug, the golden aphid wasp that parasitizes the shield scale, the soft scale aphid wasp, and the red-spotted lip ladybug are all effective natural enemies, which can be used to control the harm of scale insects, and should be reasonably protected and utilized.

What is the cause of leaf wilting when changing pots in bonsai and how to avoid it.

Normally, the root system of the plant will be damaged when the pot is moved, and there is a period of recovery. But if you drop too much, you are moving the pot in the wrong way. Watering should be stopped one week before the potting is moved, and the pot should be changed when the whole soil can be pulled out.

It is best to choose to water thoroughly after changing pots on rainy days, and then maintain humidity without watering. At this time, do not fertilize and wait until new roots grow before managing normally.

What is the cause of leaf wilting when changing pots in bonsai and how to avoid it.