What to Do When the New Shoots of Chinese Roses Wither and the Stems Turn Black
Are you familiar with this? Here are some small experiences in green plant maintenance for dealing with the issue of withering new shoots and black stems in Chinese roses, as follows:
What to Do When the New Shoots of Chinese Roses Wither and the Stems Turn Black
To address the issue of black new shoots in Chinese roses, it is necessary to identify the specific cause to provide an appropriate solution. The blackening of new shoots in Chinese roses is mainly caused by the following situations: excessive sunlight, over-fertilization, insufficient watering, and failure to survive after transplanting.
One, New Shoots Dried Out Due to Excessive Sunlight
Chinese roses are sun-loving flowers and require plenty of sunlight in their growing environment. However, this does not mean that the more sunlight, the better. Everything has its limits, and exceeding them is not conducive to the growth of Chinese roses.
In summer, sunlight is strong, and the new shoots of Chinese roses are relatively tender and not very resistant to sun exposure. If Chinese roses are exposed to strong sunlight for a long time, the new shoots can easily dry out, leading to withering and blackening.
Measures for Treatment
If caused by excessive sunlight, do not continue to expose to strong sunlight and immediately change the maintenance environment of the Chinese roses. There are two measures for treatment.
① Change the placement of the Chinese roses, which is more suitable for roses in smaller pots that are easy to move. By moving the pot's position, the sunlight environment can be changed, preventing direct exposure to strong sunlight.
② Use a shade net for shading. For larger pots or roses that are not easy to move, this method can be adopted, by setting up a shade net for shading.
Note that you should not completely keep Chinese roses away from the sun to avoid sunburn. Chinese roses do require sunlight, so the shading should generally be between 25-50%, as excessive shading can easily cause excessive growth and is not conducive to photosynthesis.
Two, New Shoots Damaged by Over-fertilization During Germination
Chinese roses grow relatively fast, and with proper pruning, they can bloom multiple times a year. After each pruning, it is necessary to supplement nutrients.
However, the timing and amount of fertilization need to be controlled. Fertilization should be done before or immediately after pruning.
It is not suitable to fertilize during the period of new shoot growth. If too much fertilizer is applied during the germination period, it can easily cause fertilizer damage, which will lead to withering and blackening of the new shoots.
Measures for Treatment
If it is determined that over-fertilization is the cause, fertilization should be stopped immediately to prevent further damage from fertilizer. At the same time, two things need to be done to reduce the damage caused by fertilizer damage.
① Pour a large amount of water into the pot to dilute some of the fertilizer effect. Watering can be done multiple times until a lot of clear water flows out of the pot bottom.
② Provide appropriate shading. The drying of new shoots caused by excessive fertilization is due to insufficient water absorption after root damage. Appropriate shading can reduce water evaporation and prevent the entire plant from drying out.
Three, New Shoots Also Wither Due to Insufficient Watering in Hot Summer Weather
Chinese roses require a lot of water, especially in summer when the weather is hot, and the leaves' transpiration is strong. The rate of water evaporation from the potting soil is also fast, so watering is needed to supplement moisture.
If watering continues at the same frequency as in spring after the arrival of summer, it can lead to insufficient water, and the Chinese roses will not be able to absorb enough water. Under prolonged water deficiency, the new shoots will gradually wither and turn black.
Measures for Treatment
Many gardening enthusiasts think of immediately watering when faced with drought and water deficiency, which is the right approach. However, the specific operation should still be considered based on the situation.
① If the Chinese roses only show drooping leaves and some dry new shoots, indicating that the water deficiency is not severe, watering thoroughly will be enough.
Generally, the plant can recover the next day, although the withered new shoots cannot regenerate and only the non-withered ones can be saved.
② If the Chinese roses show drooping leaves and leaf drop, indicating a critical condition with prolonged water deficiency, this is a more severe situation.
In this case, not only the above-ground parts are damaged, but the roots in the soil may also be shriveled and dehydrated. If a large amount of water is poured in at this time, it can cause the root cells to absorb water too quickly, potentially bursting the cell walls.
In such a situation, small amounts of water should be used, watering once, then waiting for a while before watering again, repeating this process several times for safety.
Four, New Shoots Wither Gradually After New Transplantation of Chinese Roses Fails
The best time to transplant Chinese roses is in the winter and spring seasons, as the survival rate is highest then. It is already summer now, and problems can easily arise after transplantation.
Improper transplantation methods and poor management after transplantation can lead to the failure of the Chinese roses to survive after transplanting, resulting in the gradual withering of new shoots.
Measures for Treatment of Withered Shoots
If the bud points of newly transplanted Chinese roses wither and turn black, it indicates that the transplantation has failed. The possibility of saving this situation is very low, so attention should be paid to the next transplantation.
I will discuss the precautions for transplanting Chinese roses in detail below to prevent such situations from happening again.
Precautions to Increase Survival Rate of Transplanting Chinese Roses in Summer
1. When buying Chinese roses in summer, it is best to purchase them from local markets. When buying online, attention should be paid to the transportation time, ensuring that it does not exceed 3 days, the shorter the better.
2. After purchasing Chinese roses, they should be checked immediately to ensure there are no issues. Once received, they should be potted immediately without delay.
3. When potting, try to minimize root damage. Online purchased Chinese roses usually come with a small简易 pot. After removing the pot, only a small amount of soil should be removed, allowing the roots to slightly show before potting, without removing too much soil.
4. After potting, water thoroughly and place the plant in a well-ventilated, shaded area to recover. After potting in summer, do not expose the plant to direct sunlight. Also, to reduce water evaporation, water should be sprayed on the leaves of the Chinese roses daily to keep them moist.
5. During the recovery period, ensure that the soil is sufficiently moist but not waterlogged. Do not fertilize, no matter what type of fertilizer, until after summer is over.
In Summary
The withering and blackening of new shoots in Chinese roses may be related to the above situations, including sunburn due to excessive sunlight, fertilizer damage during germination, insufficient watering, and failure to survive after transplanting. You can judge the cause based on the actual situation and then take corresponding measures.
The above is a related explanation of what to do when the new shoots and stems of Chinese roses wither and turn black, hoping to bring a little help to your life!