Potted flowers are yellow leaves

Potted flowers cannot be freely stretched due to roots, and their root development is limited. If they are poorly managed, they will tend to produce yellowish leaves compared to bare flowers, and the entire plant will die. The reasons for this are relatively complex. Correct diagnosis should be made and the right medicine should be prescribed. Now analyze the causes and remedial measures in the following aspects. First, there are two kinds of water imbalance, one is that watering too much, causing water, so that basin soil anoxic, part of the fibrous roots suffocation and rot, losing the ability to absorb water and nutrients caused by the apex of flowers, atrophy, tender The leaves are yellow and the old leaves are gradually dark yellow. When this phenomenon occurs, soil should be loosened immediately, watering should be controlled, and fertilization should be stopped. Second, it is caused by drought. Watering is impenetrable for a long time. Although the leaf color of the new leaves of the flower's top heart is normal, the lower leaves gradually turn yellow and fall off or dry. Therefore, it is necessary to carry out watering in a timely manner, and adhere to the principle of "do not do it, do not pour, water pouring through". Second, fertilizer and water imbalance First, due to excessive fertilization, too thick caused by yellow leaves. The new leaves are hypertrophic and glossy, but the bumps do not stretch and the old leaves gradually turn yellow and fall off. At this time, fertilization should be stopped and the amount of watering should be increased to dilute the fertilizer, or immediately irrigated, washed with water, and then replanted into the pot, or remove part of the soil, and replace the soil with new one to restore the normal flower quality. Absorption of nutrients. The second is the lack of fertilizer, long-term no basin soil, no fertilizer, basin soil within the fertilizer is limited, can no longer provide the necessary food for flowers, or plant roots in the basin should be aging or too dense and other reasons, causing tender branches, section length, Thin yellow leaves. In this way, it is necessary to change basins and change soil. Generally, it is advisable to change the spring from the rain to the changing of the basin in the beginning of the summer. For winter flowering species such as the clivia and cyclamen, it is better to change the basin from September to October. Third, the acid-alkalinity basin soil gradually alkalization, and the cultivation of acidic soil of the southern flowers, such as Camellia, Milan, smiling, rhododendron, jasmine, orchids, lanterns and other grass, the most prone to yellowing. The reason is that the slightly alkaline soil makes these flowers unable to absorb iron. In order to change this situation, it is necessary to use rot-leaf (a soil with a lot of organic fertilizers). In the cultivation process, 1 part of ferrous sulfate (black yam), 3 parts of pig manure (decayed), 5 parts of bean cake, and water are often used. 100 parts) After mixing, the dark liquid decomposed into a closed container for about 1 month, and the supernatant was diluted with 1 part of water and 5 parts of water to dilute the water. Fourth, light imbalance First, the summer will be like sex cool or cool flowers, such as Clivia, Cyclamen, Fuchsia, Four Seasons Begonia, placed in direct sunlight in high temperature, easily lead to young leaves tip or leaf edge Jiao . Need to move to a well-ventilated and cool place for maintenance. The second is that most of the flowers that are sunny and happy will be placed in places where the shade is too large or where there is insufficient light. This will gradually lead to debilitating growth. The leaves are thin and yellow, and do not bloom or rarely bloom. Pay attention to move the potted flower to sunny place. V. Poorly ventilated potted plants apply too much nitrogenous fertilizer. The branches and leaves have grown lushly. Without long-term pruning, the leaves in the inner leaves are not well ventilated and the light is insufficient. Pruning should be strengthened to make it light and airy. At the same time, it should be properly watered and phosphorus and potash should be added appropriately. 6. When the humidity of the indoor flower-breathing air is too dry, some of the flowers that are sexually humid, such as orchids, monstera, jasmine, and smiling people, often have dry leaves, or dead spots on the leaves, or spots on the leaves. , edge curling and other phenomena. In winter, the incidence of indoor coal stove heating is heavier. At this time, care should be taken to wash the leaves with warm water similar to the room temperature in order to increase the air humidity. For some rare flowers, it is best to use a plastic film cover and place a small pot of clear water in the cover. Seventh, pests and diseases caused by fungi and other pathogens caused by leaf spot disease, easy to make local leaf necrosis, there are yellow spots or plaques, severe when the whole leaves yellow off. Yellow-green embedded mottles appeared on the leaves after infection with mosaic virus. Infested by red spiders and other pests, the leaves will become local yellowish and even yellowish leaves. When pests are found to be harmed, they should be promptly controlled. VIII. Severe Stimulation The use of excessive pesticide concentrations in the prevention and control of pests and diseases, or contamination by toxic gases in the atmosphere, or sudden watering of cold water when the temperature is high, can easily cause partial scorch of the tip or leaves, or even the death of whole plants. Therefore, we should pay attention to the rational use of pesticides and try to eliminate the source of air pollution. In midsummer, we should avoid watering with cold water before and after noon. As for the autumn, deciduous flowers and yellow leaves, the first year and second year, the flowers and flowers are dead and yellow, and the perennial shoots of the perennial flowers are chlorosis; after the flowers are transplanted, due to a momentary malnutrition, a small amount of yellow leaves fall off; individual flowers, such as hibiscus and bergamot, After germination, new leaves, chlorosis, etc., are normal physiological phenomena. Source: China Green Times Yang Guoqiang

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