What are the causes of yellow leaves and fallen leaves of Chinese rose?
Reason 1: insufficient water.
Lack of water will not only affect the growth, but also make the upper branches unable to get enough water supply, so that the upper leaves and branches will gradually turn yellow first. After a long time, the whole plant will dry up and die, so watering must be sufficient. Generally, in summer, the water consumption is high, the weather is hot, the water evaporates quickly, and the soil dries naturally, so it is generally necessary to water the roses every other day. My personal suggestion is to water the roses. When the soil is dry below 3cm, it should be replenished and watered thoroughly to avoid water shortage.
Reason 2: Fertilizer burns roots.
Excessive fertilization or improper use of fertilizer will cause fertilizer to burn the roots. Once the root system is burned, the temperature of the soil will rise rapidly, and the water stored in plants will be pumped back into the soil. Rose loses too much water, the leaves will naturally turn yellow, and the tip will also turn yellow. My personal advice on fertilizing Chinese rose flowers is not to be greedy for too much or too rough. The thinner the liquid fertilizer, the better. The frequency of applying fertilizer should not be too tight, and it is advisable to use it 2 ~ 3 times a month.
If it is yellow leaves caused by fertilizer damage, it is necessary to trim the yellow leaves in time, water the pot soil with big water, then pour off the accumulated water, dilute the fertilizer, and then put the rose pot in a well-ventilated place to evaporate the water as soon as possible. If the root system is burnt out, take off the pot, trim it and put it on the pot.
Reason three: environmental discomfort.
The yellowing of Chinese rose leaves may be related to environmental discomfort, because the change of weather will directly affect the growth of plants, and the leaves will fall off and turn yellow at high temperature. Therefore, when the ambient temperature is high and the humidity is high, we should pay attention to cooling down. We can often spray water on the ground to increase the humidity, so that the ground will be cool and the soil in the flowerpot will be cooler. Also, direct exposure to strong light can also lead to yellowing of leaves. Personal advice, when the light is strong, pull the sunshade in time to avoid direct glare.
Reason four: metabolism
The yellow leaves of Chinese rose are not necessarily caused by mistakes, but may also be caused by metabolism. This situation is not a big problem, just like our digestive system digests food, it always has to be excreted. So, if the old leaves are all yellow, don't worry too much. This is a normal physiological phenomenon.
Reason 5: Flood hazard.
Roses are afraid of drought and waterlogging. If there is always accumulated water when watering or the soil remains moist for a long time, it is easy to rot roots and yellow leaves. My personal advice is not to water roses with stagnant water. If you water too much, dump the accumulated water in time, strengthen ventilation, make water consumption faster, and avoid waterlogging. If the root is rotten, you have to take off the pot and cut off the rotten part, spray the wound with carbendazim for disinfection, dry it, then change the soil and put it on the pot again.
The above are just a few reasons that the individual summed up for the yellow leaves of Chinese rose, and some reasons have not been mentioned. Let's continue next time and see if our own rose has been caught.