What if the leaves of Phyllostachys pubescens turn yellow? How to grow well?

In family potted plants, Phyllostachys pubescens is a very easy species to raise, but if the cultivation method is wrong, it is also easy to have yellowing leaves and other phenomena. What if the leaves of Phyllostachys pubescens turn yellow? How to grow well?

First, what if the leaves of Phyllostachys pubescens turn yellow?

1. The leaves of the newly bought water bamboo turn yellow.

Cause of yellowing: at slow seedling stage

Solution: this is a normal phenomenon. Wait for the roots of the water bamboo to grow out, then cut off the yellow leaves and take good care of them.

2. Environmental changes. Leaf yellowing.

The reason for yellowing: excessive fertilization, root burning or water pollution, these environmental changes lead to root rot, and then the leaves will turn yellow.

Solution: Phyllostachys pubescens has high requirements for water, to often change clean water, it is best to use mineral water and pure water, followed by tap water, but must be precipitated before use. In this case, the rotten part should be cleaned up as soon as possible. If it is planted in soil, the yellowing leaves should also be checked from the root of the soil first. although water bamboo likes water, it is counterproductive if it is stagnant water. water bamboo is either planted in water or soil, and remember not to water too much when planting in soil.

3. It slowly turns yellow in the room for a long time.

Causes of yellowing: lack of fertilizer or lack of light

Solution: water bamboo likes fertilizer, generally apply chemical fertilizer every half a month, otherwise the leaves will be yellowed due to malnutrition; water bamboo should also be suitable for room temperature and bask in the sun properly, otherwise it will turn yellow due to lack of chlorophyll.

Second, how to raise water bamboo to grow well?

[hydroponic culture methods and matters needing attention of Phyllostachys pubescens]

1. Water quality: water bamboo can be cultured in rivers, rivers, lakes, or wells. If tap water is best precipitated for 24 hours, mineral water must not be used. The best water quality is electrolytic ion water.

2, container: do not choose shallow bottom, you can put some colored glass balls or pebbles in the container, which can not only stabilize the center of gravity, but also increase beauty.

3, maintenance work: (1) when the water bamboo is hydroponically cultured, the water surface touches the upper end of the root 3 cm, do not immerse too much, lest the rotten root affects the respiration. If there is rod decay, the rotten part must be cut in time to expand the rot-free part, preferably from the bamboo joint. Generally speaking, once the water bamboo takes root, it is not easy to rot. In addition to cutting off the rotten part, you can also put some bright green treasures in the water to promote the roots. (2) Phyllostachys pubescens has a large evaporation in summer, so it is necessary to change the water every 2 to 3 days in order to keep the water quality from pollution. at the same time, remember foliar spray when the air is dry, and it can withstand night dew at night. (3) Phyllostachys pubescens has little demand for fertilizer and can be dissolved with one or two pieces of fertilizer tablets with water for a long time to increase nutrition.

[soil culture methods and points for attention of Phyllostachys pubescens]

1. Soil: the water quality of the soil is not strict, but it should be noted that it is an acid-loving plant, alkaline soil should not be used, and the soil quality of fertile and slightly sticky soil should be better. As the soil in most areas of the north contains more salt and alkali, bamboo will gradually lose green and turn yellow due to the lack of soluble iron elements that can be absorbed by flowers after a period of time. 0.2% ferrous sulfate can be watered once a month.

2. Light: it can adapt to a wide range of light, can grow well in all-day or semi-shady places, avoid scorching sun exposure, and it is more favorable for its growth to put semi-shaded places in summer, which can keep the leaves green.

3. Temperature: Phyllostachys pubescens is not cold-resistant, the open field in East China can survive the winter with a little protection, and the winter temperature should not be lower than 5 ℃.

4. Watering: water bamboo likes water, so you must keep its potted soil moist during the growing season. Pay attention to ensuring that the flowerpot will not leak, and you can directly keep the water in the pot with a depth of about 5 centimeters, so you don't have to worry about watering every day. Remember to spray water on the leaf surface to maintain humidity when it is hot.

5. Fertilization: fertilization should be applied frequently with thin fertilizer, and 1% compound fertilizer can be applied to water in spring and summer to avoid excessive fertilization which can easily cause leaves to turn yellow. Fertilize 1-2 times a month during the peak growing season. In order to control the height, 400ppm paclobutrazol can be irrigated once in May, which can effectively control the excessive growth of Phyllostachys pubescens.

6. Diseases and insect pests: leaf blight and red spider damage often occur. Leaf blight can be sprayed with 1000 times of topiramate and red spiders with 1500 times of dimethoate EC.

Warm Tip: water bamboo can be made into bonsai, can also be used as a flower arrangement material, high appreciation value, at the same time, it also has the role of purifying water quality, it can be planted in the water, can purify most of the COD, TN and other pollutants in the water, is a kind of plant to restore the ecological source of water.