Modern city people pay more and more attention to environmental protection, like to cultivate some potted plants in the office or home to decorate. Phyllostachys heterocycla is a member of the indoor potted cultivation army. Although the water bamboo is easy to raise, but some flower friends of the water bamboo leaves appear yellow phenomenon, in fact, there are many factors of yellow leaves. What should we do if we encounter yellow leaves of water bamboo? The following is the reason why the leaves of water bamboo turn yellow and how to save it.
Cause analysis and treatment of Phyllostachys heterocycla leaves yellowing: symptom 1: yellowing of newly purchased water bamboo leaves;
Cause analysis: it's hard to say what the reason is, because the newly bought plants always have to go through a slow seedling stage;
Solution: at this time, you can only take care of it as it is. If after a period of time or can not improve, it can only blame their own bad luck to buy is the sick seedlings.
Symptom two: raised for a period of time, later the leaf yellow;
Cause analysis: in this case, the environment should be checked first to see if the environment has been changed, and then the roots. Most of the problems that suddenly turn yellow during normal maintenance are root problems, such as excessive fertilization, water pollution, root rot, and then the leaves will turn yellow.
Solution: in general, the rotten parts should be cleaned up as soon as possible. If it is planted in soil and the leaves turn yellow, it should also be checked from the root of the soil. Although water bamboo likes water, it will be counterproductive if it is waterlogged. When planting in soil, remember not to water too much.
Symptom 3: the original green leaves become pale and yellow or light green, while the old leaves are relatively normal or gradually change from green to yellow;
Cause analysis: in fact, there are not many such cases, and the yellowing of leaves due to lack of fertilizer is chronic. Flower friends can observe the situation of leaves. If the yellowing of leaves is rapid, it will not be due to lack of fertilizer, and do not blindly apply fertilizer, because if the root has problems, fertilization will aggravate the rot.
Solution: if it is determined that the leaves turn yellow due to lack of fertilizer, we can use the method of small meals to fertilize and timely add some alum water. (Note: Phyllostachys heterocycla is a foliage plant, and nitrogen fertilizer should be mainly applied.)
Water demand of water bamboo is high. The best use of mineral water and purified water, followed by tap water, but must be used before precipitation. Water contact root 3 cm, do not immerse too much, lest rotten root affect breathing. If the rotten part appears, the rotten part must be cut off in time to prevent the rotten part from expanding, and it is better to cut it from the bamboo joint. Generally speaking, once the water bamboo takes root, it is not easy to rot. if the rot occurs, in addition to cutting the rotten part, you can put some bright green treasure in the water to promote the root. The water should be changed every half a month.
When potted with soil culture, the soil should be kept moist in the growing season, or directly planted into a watertight pot. The water in the basin should be about 5cm deep, which can avoid the trouble of watering every day. Summer is the peak growing season, fertilizing once or twice a month. In order to control the height, 400 ppm Paclobutrazol can be irrigated once in May, which can effectively control its growth height. In addition, the adaptation range of water bamboo to light is wide, and it can grow well in full sunlight or half shade, but half shade in summer is more favorable for its growth, which can keep the leaves green.