How to remedy the yellowing of pine trees in spring
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1. Lack of iron element. Iron is an essential element for the growth of pine trees. If there is a lack of iron, the leaves tend to turn yellow and show poor growth. It is necessary to spray fertilizer on the leaves as soon as possible, such as ferrous sulfate fertilizer or ferrous ammonium sulfate, and spray several times to recover soon.
2. Unsuitable temperature. In early spring, when the temperature on the ground is too high and the temperature underground is too low, the above-ground part will grow first, while the underground part cannot provide the plant with water and nutrients normally, leading to nutrient and water deficiency, thus affecting growth and causing the leaves to yellow. In this case, it is recommended to control the temperature, especially during the early spring season.
3. Excessive watering. Pine trees have a strong drought resistance, and watering should be moderate, usually once every three to four days during the spring and autumn growing seasons. If irrigation is too frequent, it is difficult for the plant to absorb it all, and over time, it can lead to waterlogging, especially in potted plants, which can cause yellow leaves and root rot. Watering should be reduced, drainage should be timely, and ventilation should be increased to evaporate the water. Be sure to control the amount of water in the later stage and strictly prevent waterlogging.
4. Improper pruning. The growth of pine trees also requires proper pruning to make the tree shape better and more beautiful. If pruning is not done for a long time, there will be many yellow and dry branches and leaves. These should be cut off as soon as possible to save nutrient consumption and promote faster recovery.
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