Spring flowers and trees should be full of vitality and vigor, but some potted flowers and tree stumps begin to wither and even die after sprouting a few tender leaves. The main reasons are as follows:
Overwatering: Excessive watering will keep the water in the potting soil in a saturated state for a long time, causing the plant's roots to rot or mold due to lack of oxygen supply, which can even lead to death.
Over-fertilization: Over-fertilization or too high fertilizer concentration can easily cause root burn, leading to the plant drying out and dying. Especially for newly repotted plants, their root system has weak absorption ability and mainly consumes its own internal nutrients and moisture. Fertilizing at this time is most likely to damage the tender roots.
Too early removal from greenhouse: In spring, the temperature fluctuates greatly. Removing the flowers and trees from the greenhouse too early can cause them to die because they cannot adapt to the rapidly changing external weather conditions. Additionally, flowers and trees that have been potted for not long grow new leaves and are placed under the sun, accelerating the evaporation of water on the leaf surface, causing the plant to dehydrate and die.
Insufficient water supply: If the potting soil remains in a dry state for a long time, the flowers and trees cannot absorb enough water. With the rapid rise in spring temperatures, strong winds, and fast evaporation of water, it is easy to create an imbalance in the water supply and demand of flowers and trees, eventually leading to their death.
Improper pH level: Plants have different biological characteristics; some prefer acidic soil while others prefer alkaline soil. If acid-loving plants (such as camellias and azaleas) are planted in alkaline soil, the plants will naturally die, and vice versa.
Pests and diseases: The main pests causing the branches and leaves of flowers and trees to dry out and even the death of the plant include scale insects, aphids, June bugs, and longhorn beetles. Some of these pests suck the liquid from plant tissues, some attack the roots of flowers and trees, and some bore into the wood of flowers and trees. The main diseases causing the death of flowers and trees include powdery mildew and damping-off disease.
To prevent flowers and trees from dying in the spring, the following methods can be adopted:
Moderate watering: For general flowers and trees, the principle of watering is to water only when the soil is dry, and when watering, ensure it is thoroughly soaked.
Reasonable fertilization: The principle of fertilizing potted flowers is thin fertilizer applied frequently, meaning each fertilization amount should be small, but the number of fertilizations should be more. To meet the nutritional needs of flowers and trees, a 0.5% urea solution or a 0.25% potassium dihydrogen phosphate solution can be used for foliar fertilization when necessary. Excessive fertilization or too high fertilizer concentration can both cause fertilizer damage.
Timely removal from greenhouse: All flowers and trees should not be removed from the greenhouse too early but should be moved out after the weather stabilizes. Especially for newly potted flowers and trees, they should not be taken out of the greenhouse too early and placed under the sun but should be kept in the greenhouse or in a shady and ventilated place for a period of time (generally until after mid-April) before gradually moving them to sunlight after their growth stabilizes.
Proper preparation of potting soil: During the preparation of potting soil, both its fertility condition and its pH value should be considered to see if it meets the biological characteristics of the cultivated flowers and trees. Potting soil with pH values that do not meet requirements should be quickly remade according to the requirements.
Effective prevention and control of pests and diseases: For controlling scale insects and aphids, use 1000 times diluted 40% oxamyl or other insecticides for spraying; for controlling June bugs, use black light to lure adult insects, manual capture of adult insects, or insecticides; for controlling damping-off disease, use 1000 times diluted 70% thiophanate-methyl wettable powder for root irrigation during the initial stage of the disease.
Taian Rural Seedling Breeding Base is a professional nursery integrating scientific research, production, and sales, located in Beijipopo Town. It specializes in breeding peach seedlings, walnut seedlings, apricot tree seedlings, etc., with high purity, good quality, and low prices.
By: http://www.guoshulvhuamm.com/