How to care for a Radermachera sinica (China doll)? Solutions for leaf drop

The China doll has an elegant form, with small, emerald-green leaves and dancing shadows. It is a very precious indoor ornamental plant. You can write your happy wishes on a card and hang it on the tree. Other names: chili tree, jiegouliangsan, mountain bean tree, qilin ziwei, peace tree (a commercial name). The China doll is the representative tree of Hawaii. Because people believe it can bring happiness, many people place it in front of their homes.

What should you do if a China doll drops its leaves in northern regions? There may be 2 reasons: 1 It may be caused by too much watering and poor ventilation, with the leaf tips turning dry and yellow? 2 The main reason is dry indoor air; you can spray clean water on its leaves 2 to 3 times a day, which can effectively prevent the leaf tips of newly sprouted leaves from turning dry and yellow.

As for the names China doll and peace tree, most were coined by flower and plant sellers to cater to consumers' spending psychology, adding people's expectations of praying for blessings, hoping for wealth and seeking peace based on certain characteristics of the plant.

* The China doll likes a warm, hot environment, with an optimal growth temperature of 20°C to 30°C. During the peak heat of midsummer, when the ambient temperature reaches above 30°C, it should be appropriately shaded with a canopy, and water should be sprayed more on the environment and leaves, or it should be moved to a ventilated, cool place with dappled shade to spend the summer. When late autumn arrives, when the ambient temperature drops to around 10°C, it should be promptly moved into a shed or indoor room. During overwintering, it is best to maintain a shed or indoor temperature of no less than 8°C, and at the lowest no less than 5°C, to avoid cold damage to the leaves or leaf drop. For household potted plants, it can be moved indoors with air conditioning or an electric heater to ensure the room temperature is no less than 8°C, so it can pass the winter safely.

The China doll is shade-tolerant and can grow in full sun or semi-shade environments. Its seedlings are relatively shade-tolerant, and in summer a canopy should be set up for shading. For potted China dolls, to keep them from growing too tall, watering can be appropriately controlled when new shoots emerge in spring, keeping the potting soil relatively moist. For potted plants displayed indoors, in addition to keeping the potting soil moist, the plant should also be sprayed with water 2 to 3 times a day during hot seasons. For plants placed outdoors for care in summer and autumn, watering of the plant and its surrounding micro-environment must be strengthened to create a cool and moist suitable environment for it

What should you do if the leaves of a China doll fall off at a touch, and how to save a China doll that is dropping leaves / repotting

The China doll, just hearing its name makes you feel good, and after seeing its sturdy, beautiful shape and emerald-green leaves, you want to grow it even more. In daily life, many people grow China dolls, but during the growing process, many flower lovers encounter leaf drop, so what should you do if the leaves of a China doll fall off at a touch? How do you save a China doll that is dropping leaves? For this, let the editor explain it to you.

1. If the leaves of a China doll fall off at a touch, find the cause

As a plant with a beautiful meaning, the China doll is grown in many people's homes, but many of them often encounter troublesome problems, such as China doll leaves turning yellow and falling off at a touch. What exactly is going on? For this, we first need to check the reasons why the China doll is dropping leaves.

According to the editor's research, there are generally six situations that can cause a China doll to drop leaves: ① improper watering; ② improper fertilizing; ③ temperature reasons; ④ light reasons; ⑤ humidity problems; ⑥ insect reasons. Next, the editor will tell everyone how to save a China doll that is dropping leaves.

2. How to save a China doll that is dropping leaves

1. Improper watering

In the care methods for China doll, watering is essential, but this is very troublesome for many beginners. Because the China doll likes a moist environment, beginners often cause leaf drop because they cannot control the degree. Improper watering is divided into two situations: one is overwatering, and the other is underwatering.

Overwatering: The soil remains moist for a long time; at this point the soil's oxygen content decreases, and in serious cases the China doll's roots cannot normally absorb oxygen and nutrients, after which the leaves fall off at a touch. Solution: Immediately reduce watering and loosen the soil frequently so the soil is well aerated.

Underwatering: The China doll's roots do not absorb enough, which very easily causes the leaves to become dull and lusterless and fall off at a touch. Its manifestation is: the lower old leaves age, and gradually wither, yellow and fall from bottom to top. Solution: Water lightly to let it gradually recover, then return to normal watering.

2. Improper fertilizing

Besides improper watering, improper fertilizing can also cause the leaves of a China doll to fall off at a touch. Improper fertilizing is also divided into two situations: one is overfertilizing, and the other is underfertilizing.

Overfertilizing: New leaves absorb sufficient nutrients and grow thick and fleshy with an uneven surface, while old leaves have difficulty absorbing nutrients, thus drying at the tips, scorching yellow and falling off. Solution: Immediately stop fertilizing and increase watering to dilute the fertilizer in the pot; or, more simply, directly change the potting soil so the China doll becomes fresh again.

Underfertilizing: If it has not been fertilized or had its soil changed for a long time, the soil will lack nutrient elements, causing the leaves of the China doll to fall off at a touch. Solution: Replace with new loose, fertile cultivation soil and apply a thin compound flower fertilizer.

3. Temperature reasons

The China doll likes a warm environment, with an optimal growth temperature of 22-28°C. In hot seasons, once the temperature exceeds 30°C, the growth of the China doll will be affected, and over time its leaves will fall off at a touch; in winter, once the temperature falls below 5°C, the phenomenon of China doll leaves falling off at a touch will also appear.

Solution: How to save a China doll that is dropping leaves? If the temperature is too high, everyone should spray water on the leaves as much as possible to lower the temperature, or move it to a ventilated, cool place with tree shade for the summer; if the temperature is too low, the plant can be moved indoors with air conditioning or an electric heater to ensure the room temperature is no less than 8°C, so it can pass the winter safely.

4. Light reasons

If the leaves of a China doll fall off at a touch, besides water and fertilizer, light cannot be ignored either. If the leaf drop is caused by light, it is also divided into two situations: one is too much light, and the other is too little light.

Too much light: The China doll is a light-loving plant, and can also tolerate slight shade; full sun and semi-shade environments are both acceptable. But once it is exposed to strong sun, it very easily causes the leaf tips and leaf margins of young leaves to dry and scorch, or the leaves to yellow and fall off. Solution: Move the China doll promptly to a well-ventilated shady place and water lightly.

Too little light: Too much light is not good, but if the China doll is placed in a dim indoor area for a long time, the chlorophyll in the leaves will decrease, and over time the leaves will also turn yellow and fall off. Solution: Very simple, just increase the lighting time.

5. Humidity problems

During the care of a China doll, maintaining air humidity around the plant is also very important. Once the air is too dry, the China doll often shows dry, withered leaf tips that fall off.

Solution: How to save a China doll that is dropping leaves? At this point, everyone should pay attention to methods such as spraying water and covering with plastic film to increase air humidity, keeping it at 70-80%.

6. Insect reasons

During the care of a China doll, improper operations can cause it to be invaded by pests and diseases. When it suffers from leaf spot disease, its leaves will partially necrose, showing yellow spots or patches, and in serious cases the whole leaf withers, yellows and falls off. In addition, when the China doll is harmed by scale insects and the like, its leaves are also at risk of falling off.

Solution: Find out which pest or disease it is, then spray the corresponding pesticide. As for what to spray, it is introduced in detail in the pest and disease control for China doll, so I will not say more here.

Regarding China doll leaves falling off at a touch, after reading the above content, everyone should know what to do when they encounter it again! Actually, leaf drop is caused by one reason, but it is often the result of multiple factors, so when everyone encounters this situation, they must make a correct diagnosis, so they can treat the root cause.

How to grow a potted China doll and what to do if its leaves turn yellow

The China doll is also called chili tree, mountain bean tree, vegetable bean tree, etc. It is a small tree of the genus Radermachera in the Bignoniaceae family, often made into small and medium potted plants, and can be placed on balconies, in bedrooms, entrance halls and other places. Its leaves are dense and emerald green, full of vitality and vigor, and it can serve as an ornamental plant for boosting prosperity, bringing people the message of happiness. Now let's take a look at how to grow a potted China doll!

The growth habits of the China doll

The China doll is native to Taiwan, China, Guangdong, Hainan, Guangxi, Guizhou, Yunnan and other places, and is also distributed in India, the Philippines, Bhutan and other countries. It likes high temperature, high humidity and sunny environments, tolerates high temperature, fears cold, prefers moisture and avoids dryness, and grows in valleys or open sparse forests. For cultivation, loose, fertile, well-drained loam and sandy loam rich in organic matter should be used.

Propagation methods for the China doll

1. Sowing: For the China doll, at the end of December, when its capsules are close to splitting and the seeds are fully mature, collect the long strip-shaped capsules. After drying, shake out the winged seeds, rub them and winnow away the membranous seed-wing fragments, then store them dry until sowing in the following spring. Usually between March and April, first soak them for 3 to 4 hours, take them out and spread them out to dry slightly, then mix with sandy soil and broadcast-sow them on a prepared seedbed, lightly covering with thin soil and covering with plastic film to retain moisture. After the seeds sprout, remove the film and set up a shade shed for shading.

2. Cuttings: For the China doll, between March and April, when the ambient temperature reaches about 15°C, cut 1- to 2-year-old woody branches about 15 cm to 20 cm long, remove all the leaves, and the lower cut is best located 0.5 cm below a node. Insert them into a sandy loam seedbed, with the cutting inserted about 1/3 to 1/2 of its length into the soil. During the period when the lower cut is healing and rooting, water should be sprayed to keep the seedbed moist. Only after it grows a complete root system can it be transplanted into a pot with a soil ball.

3. Layering: For the China doll, between March and April, ring-bark a 2-year-old strong branch or stem below a node. The width of the bark removal is generally 2 to 3 times the diameter of the layered stem. Below the ring-barked cut, tie a 15×20 cm plastic film, and tie it against the thick main trunk to prevent it from drooping and being broken by wind. By late autumn, after the ring-barked cut has grown a relatively complete root system, cut it away from the mother plant and plant it separately in a pot.

How to grow a potted China doll?

1. Soil: When the China doll is growing, soil is equally important. Choose a loose, breathable, well-drained and nutritious soil type, usually prepared with garden soil: leaf mold: decomposed organic fertilizer: river sand = 5:3:1:1. Persist in loosening the soil once a month during the growing season to ensure its roots are always in a well-aerated state. If water accumulation is found in the pot, drain it as soon as possible, and after the potting soil dries, repot and change the soil.

2. Temperature: The China doll likes a warm, moist environment, and temperature is most important. The daytime temperature should be controlled between 19-21°C, and the nighttime temperature between 18-20°C. In hot midsummer, try to keep the temperature below 27°C. When the ambient temperature is very high, shade it appropriately with a canopy. In winter, the temperature must not be lower than 8°C, and the humidity must not be less than 5°C, otherwise below this temperature it will suffer frost damage.

3. Humidity: The China doll prefers moisture for both its soil environment and indoor environment, and indoor humidity should be controlled between 70-80%. In large banquet halls where humidity cannot be controlled, spray the leaf surfaces once in the morning and once in the evening. If the humidity is too low or it is in a dry environment for a long time, the leaves will curl and turn yellow, affecting their ornamental value.

4. Light: Light is very important for the China doll. It likes to grow in a semi-shade environment. In the north, it is generally kept indoors, so there is no problem of direct sunlight. What it fears is being placed in a dark place for a long time where neither direct light nor scattered light can reach it; after a long time, it will certainly drop leaves. So in winter it should be placed on a balcony or in front of a sunny window to get sufficient light.

5. Watering: Potted China dolls should be watered once every 3 to 4 days in summer, but this also depends on the individual situation. In winter, indoors in the north, the China doll almost stops growing, and watering should be controlled so that the potting soil is simply not dry. If you water, water thoroughly; if you do not water, then do not pour a single drop into the pot. This is the principle, please remember it.

6. Pruning: The purpose of growing a China doll is for ornament and to complement the indoor environment. If the tree shape grows unshapely, it will not be beautiful, so it must be pruned carefully. Generally, you can prune along the China doll's natural growth direction, or prune it into a mushroom shape or a rounded mound shape, while cutting off some old leaves and yellow leaves.

7. Fertilizing: For potted China dolls, in addition to adding an appropriate amount of decomposed cake fertilizer and 3% multi-element compound fertilizer to the cultivation soil, topdressing should also be given continuously. During the growing season, a quick-acting liquid fertilizer can be applied once a month, usually decomposed cake fertilizer water. For small household potted plants or large potted plants displayed for a long time in public places, a small amount of multi-element slow-release compound fertilizer granules can be buried regularly, or a mixed solution of 0.2% urea plus 0.1% potassium dihydrogen phosphate can be used for watering.

8. Pests and diseases: The pests on the China doll generally include scale insects, mites and aphids. Use jiebisishi, methidathion, manjing, pyridaben, zinc phosphide, omethoate and decamethrin for pest control. As long as ventilation is frequent, pests generally will not occur. The China doll's disease resistance is still quite strong, and diseases usually rarely occur.

What to do if the leaves of a China doll turn yellow?

1. Metabolism: The China doll is constantly carrying out metabolism as it grows, so there will be withered and yellowed old dead leaves. Just cut off the yellow leaves directly; no special care is needed.

2. Caused by having no roots: If the China doll was just bought, it may be because the China doll has no roots. It can be handled according to the actual situation, either return it or let the China doll rest quietly until it sprouts new roots.

3. Sudden environmental changes: If the temperature, humidity and light change too much suddenly, or if repotting damaged the roots and it needs to recover, causing the leaves to turn yellow, measures can be taken to reduce the degree of environmental change and wait for the China doll to adapt.

4. Improper watering: If there is too much watering, root respiration is blocked or even the roots rot, affecting absorption and causing a large number of yellow leaves. At this point pay attention to watering; do not wait until the soil is completely dry before watering, water thoroughly when watering, and do not keep the frequency fixed for a long time.

5. Dry air: If it is caused by dryness due to poor indoor ventilation, the leaf tips will turn dry and yellow. At this point, increase indoor ventilation and also spray water appropriately to increase indoor humidity.

6. Insufficient light: If it is caused by the plant being in an environment that is too dark with insufficient light. At this point, give the China doll sufficient sunlight, but avoid scorching exposure.

7. Too much fertilizer: Check whether the amount of fertilizer was too large, whether the organic fertilizer applied was decomposed, and so on. At this point, flush the potting soil with water to dilute the fertilizer strength, but be careful not to cause water accumulation.