Nine reasons for yellow leaves of domestic potted plants

Friends who like potted flowers may find that potted flowers raised at home are more likely to have yellowing leaves than those cultivated in the open field. But what is the cause of this? The editor will analyze the more common reasons for you, and the flower friends who are troubled by this problem can understand it together.

Jasmine (details)

One of the reasons is too much water. The basin soil has been too wet for a long time, resulting in lack of oxygen and root rot. After the injury, the young leaves turned pale yellow, and then the old leaves gradually turned dark yellow.

The second reason is drought and dehydration. Flowers missed watering or long-term watering half waist water, that is, the upper wet and lower dry, will cause the leaf color dim and dull, the leaves wilting and sagging, first the lower leaves aging, and turn yellow and scorched from the bottom up.

The third reason is the chronic lack of fat. Without fertilizing or changing the soil for a long time, there is a lack of nutrition in the soil, resulting in thin branches and leaves and yellow leaves.

The fourth reason is excessive fertilization. Excessive concentration of fertilization will lead to exosmosis of root cell fluid, separation of plasma wall, scorch at the edge of old leaves and even death of the whole plant.

The fifth reason is the heat. Flowers that like cool or shady flowers, such as orchids, cyclamen, and hanging bells upside down (details), can easily cause scorch on the tips or edges of young leaves if they are placed in a high temperature place and let the sun shine directly.

The sixth reason is excessive shade. If the light-loving flowers are placed in places where there is not enough light, it will lead to weak plant growth, thin and yellow leaves, and rarely or no flowering.

The seventh reason is that the air is dry. For flowers in a humid environment, if the air is too dry, there will be scorched leaf tip or leaf edge, or scorched spots and edge curling on the leaf.

The eighth reason is deficiency. Deficiency diseases such as potassium deficiency and magnesium deficiency can also cause yellowing of leaves.

The ninth reason is the harm of diseases and insect pests. For example, leaf spot disease, in severe cases, the whole leaf is withered and yellow and falls off. Red spider damage, local leaves and even the whole leaf withered and yellow.

The causes and solutions of the yellowing of Manjusri leaves, as well as the solution of rotting roots.

Wenshu orchid is a common kind of flowers in our home, they are beautiful, with a touch of fragrance, green leaves. Wenshulan is a kind of flower with high ornamental value, which is very beautiful when it is in full bloom. It can also cause yellowing of leaves and rotting roots. Today, I'll take you to learn more about it.

Cause of yellowing of leaves

1. Too little watering makes the soil too dry and airtight, so that the leaves dry up

2. too much watering leads to rotten roots of Manjushri, the roots can not absorb water, and the leaves are withered and yellow.

Solution.

1. Wenshulan likes warm and humid areas, slightly cold-resistant, but not cold-resistant. The temperature suitable for growth is 15-20 ℃. During its growing period, it needs a lot of fertilization and watering, especially before and after flowering and during flowering.

2. Wenshu orchid whose leaves are too long will cause it to be top-heavy and unable to keep up with its nutrients. at this time, it is necessary to replace the basin soil with a larger basin, so that its roots have more space to collect moisture, so that it will thrive and grow green.

The method of judging rotten roots

1. Basin soil

Flowers and trees that can grow normally in summer and autumn are watered once a day, if the potted soil is dry, it is normal, if it is in a wet state, the roots are rotten, and if the potted soil is still moist for a few days, most of the roots have festered.

two。 Leaf color

If there are several pots of the same kind of flowers, when placed together, it is found that one pot has lost its luster or wilted state, it means that the root rot has occurred.

3. Leaf shape

The leaves were folded and deformed, indicating that the roots had rotted, and the leaves could not get water and nutrients due to decay, which gradually withered.

Solution method

If the root of Wenshu orchid is rotten is difficult to treat, drag the flowers out of the pot, quickly cut off the rotten part of the root, use potassium permanganate for disinfection, re-pot for planting. If it is only a small amount of decay, you can use the above methods, wait for about three days to replant and normal maintenance. In its growing period, we must keep adequate water and fertilizer, do not be diligent in watering, fertilize too much.

The above is my knowledge about the yellowing leaves and rotting roots of Manjushri. I hope it can be helpful to the flower friends. Please continue to pay attention to the succulent flower bed and learn more about flower conservation.

Why do the leaves of Fugui cage turn yellow? Fugui cage is a cage-like chamber decorated with potted flowers made by Fugui bamboo. But it is common that the leaves of the rich cages just bought turn yellow within a few days at home. The reasons are generally as follows: 1. In order to meet the urgent needs of the market, some sellers use rootless bamboo stems with leaves at the top to weave beautiful rich cage products, or although they have roots, they have just woven into the basin, and the damaged root tissue has no repair or no new roots. can not adapt to external environmental conditions such as high temperature, high dryness and so on. 2. Phyllostachys pubescens likes dampness and fertilizer, warm and cold, suitable temperature for growth is 20 ℃ to 25 ℃, winter can not be lower than 5 ℃, likes to grow in an environment with bright scattered light, and is afraid of direct light. The root system was damaged by excessive drying of substrate, injury of roots by thick fertilizer or sudden application of cold water under higher temperature conditions. Often no fertilization, lack of nutrition, placed in a low temperature for a long time suddenly moved to the high temperature room, and the light is too dark and lack of photosynthesis, and so on. 3. The air in the place is dirty and anoxic, the flavor of fruit is too strong, or the root rot caused by the accumulation of toxic substances in the substrate can not be discharged. 4. The contents of cytokinin and auxin in yellowing leaves are too low, the contents of abscisic acid and ethylene are too high, protein, nucleic acid and chloroplast are degraded too quickly, ammonia accumulation caused by respiratory consumption of amino acids, and lack of ATP.

In view of the above reasons, when buying a rich cage, we should not only have green leaves, but also look for new roots (tender and white root tips) and diseases. If you are rich, you can use the following methods to prevent leaves from yellowing: 1. Keep room temperature not less than 5 ℃ to 10 ℃ and irrigate the roots with potassium permanganate solution (0.1% to 0.3%) every 10 to 15 days. It is best to apply warm water 5 ℃ higher than the substrate, or spray leaves with warm water 7 ℃ to 8 ℃ higher than the temperature, and apply 0.2% urea water or extremely thin cake fertilizer water every 5 to 10 days. To ensure the healthy growth of plants. 2. Spray the leaves with edible vinegar at 5 to 10 ml / kg of warm water every day, or spray the leaves with a mixture of 3 mg / kg water containing Gantaile tablets (glucuronolide tablets) and 0.4% ferrous sulfate every three days. 3. Spraying leaves once a week with cytokinin ppm solution or 1000 times solution of Yunda120 containing brassinolide can be mixed with 0.2% urea water when the leaves are not yellowing, but not when they are yellowing. Cytokinin and Yunda 120 can also be sprayed in the above proportion. The above methods can also be used in combination, but when the leaves are yellowing seriously, the serious ones should be removed, and the slightly yellowing leaves can be reversed by method 3. In addition, we should also pay attention to the rich cage not to bask in the sun, especially the strong direct light.

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