Why the leaves of Hemerocallis turn yellow, four reasons need to be understood / attached solutions

When the leaves of the plant turn yellow, it means that there are health problems. For example, when planting day lilies, the leaves turn yellow, which means that the health condition of day lilies is poor. Why do the leaves of day lilies turn yellow? What should we do when it turns yellow? Let's take a look at the specific reasons and solutions.

Why do the leaves of Hemerocallis turn yellow

1. Lack of light

Day lilies like sunshine but can also bear shade, but it can not grow in the environment of lack of light for a long time, otherwise it will cause respiratory and photosynthesis obstruction due to lack of light, thus making the leaves green and yellow.

2. Soil consolidation

Some flower friends do not understand the breeding methods and matters needing attention of Hemerocallis, so when planting Hemerocallis, the soil is not loose and the drainage is not smooth. After a period of accumulation, the soil becomes hardened, resulting in poor root growth, thus making the leaves yellow.

3. Less fertilization

Generally speaking, Hemerocallis needs topdressing 3-4 times a year, and if it is applied frequently, it will be fertilized once every 15-20 days. If the soil is not fertile enough, fertilizer is the main source of nutrition for the growth of Hemerocallis, and too little fertilization will lead to malnutrition. So it is inevitable that the leaves of Hemerocallis turn yellow.

4. Diseases and insect pests

Aphids, red spiders, leaf blight, rust and so on, these diseases and insect pests will cause yellow leaves, not only that they will cause slow plant growth, and in serious cases, it will kill the whole day lily, which is one of the biggest threats to the leaves of Hemerocallis.

What if the leaves of Hemerocallis turn yellow

1. Move out of the shadows

Remove the day lily from the dark and lack of light as soon as possible, put it in a bright and ventilated place to manage, when the leaves return to normal, and then move it to the sun to plant, do not directly move it from the dark environment to strong sunlight.

2. Turn the soil and change the basin

No matter what kind of soil is used when planting, it is necessary to pay attention to turning the soil at ordinary times, which can avoid soil consolidation and prevent germs from overwintering in the soil. If it is a potted day lily, it will take two years to change the pot.

3. Rational fertilization

Reasonable fertilization is needed during the growing period, liquid fertilizer can be applied once a month, and the principle of frequent application of thin fertilizer can be adopted. The concentration of each fertilization can be slightly lower, which can not only provide nutrients, but also enhance the physique of Hemerocallis and improve the ability to resist diseases and insect pests.

4. do a good job in the control of diseases and insect pests

The occurrence of diseases and insect pests should be controlled as soon as possible, generally by drug spraying, and the branches and leaves eroded by diseases and insect pests should be removed in time to avoid transmission between plants.

The reason why the leaves of Hemerocallis are yellowing what to do

Hemerocallis is a perennial perennial herb, its leaves are flat and linear, and the leaf shape is relatively wide. It blossoms, full of vigor and vitality. What if the leaves of such a beautiful plant turn yellow? Let's take a look at the causes of the yellowing of Hemerocallis leaves and the countermeasures.

The reason for the yellowing of Hemerocallis leaves:

Day lilies like to be moist and drought-resistant, and sunny lilies need enough light. Hemerocallis's most important requirement for soil is good drainage, moist but not stagnant water. Therefore, according to the growth habits of Hemerocallis, once the light is not enough, the soil drainage is poor, or watering is the growth of the soil is too wet will lead to the leaves of Hemerocallis yellowing.

When applying fertilizer to Hemerocallis, too little fertilization or too little fertilization will cause the lack of nutrition of Hemerocallis, which leads to the yellowing of leaves.

Hemerocallis suffers from diseases and insect pests such as leaf blight and rust, which can also cause leaves to turn yellow or fall off.

What if the leaves of day lilies turn yellow:

First of all, give Hemerocallis a sunny, well-drained and moist soil growth environment, watering to the right amount, both keep moist and do not accumulate water.

Secondly, regular and reasonable fertilization, do not let Hemerocallis lack of fertilizer, to ensure the nutrition needed for growth.

Hemerocallis disease control, should be timely weeding, and has been withered leaves, as well as dry stems and leaves. The drug 50% mancozeb 500 times 800 times the solution was then sprayed.

Culture of yellowing leaves of Hemerocallis:

When curing the yellowing of the leaves of day lilies, it is necessary to take more careful care and put them in a semi-shaded place to ensure ventilation, light and water supply and reasonable fertilization.

Timely prevention and control of diseases and insect pests, often check whether the disease, the initial stage of the disease should be sprayed with medicine, and cut off the parts of the disease.

What if the leaves of Hemerocallis turn yellow

Causes of yellowing of Hemerocallis leaves

Day lilies like to be moist and drought-resistant, and sunny lilies need enough light. Hemerocallis's most important requirement for soil is good drainage, moist but not stagnant water. Therefore, according to the growth habits of Hemerocallis, once the light is not enough, the soil drainage is poor, or watering is the growth of the soil is too wet will lead to the leaves of Hemerocallis yellowing.

When applying fertilizer to Hemerocallis, too little fertilization or too little fertilization will cause the lack of nutrition of Hemerocallis, which leads to the yellowing of leaves.

Hemerocallis suffers from diseases and insect pests such as leaf blight and rust, which can also cause leaves to turn yellow or fall off.

Prevention and treatment of yellowing of Hemerocallis leaves

First of all, give Hemerocallis a sunny, well-drained and moist soil growth environment, watering to the right amount, both keep moist and do not accumulate water.

Secondly, regular and reasonable fertilization, do not let Hemerocallis lack of fertilizer, to ensure the nutrition needed for growth.

Hemerocallis disease control, should be timely weeding, and has been withered leaves, as well as dry stems and leaves. The drug 50% mancozeb 500 times 800 times the solution was then sprayed.

Culture of yellowing leaves of Hemerocallis

When curing the yellowing of the leaves of day lilies, it is necessary to take more careful care and put them in a semi-shaded place to ensure ventilation, light and water supply and reasonable fertilization.

Timely prevention and control of diseases and insect pests, often check whether the disease, the initial stage of the disease should be sprayed with medicine, and cut off the parts of the disease.