What should I do if the leaves of Ping An tree turn yellow?
As a popular choice for home green plants, the yellow leaf problem of Ping 'an Tree plagues many plant lovers. Yellowing leaves not only affects the ornamental value, but also a distress signal from plants. This article will start with the details of maintenance, systematically analyze the causes of yellow leaves and provide professional solutions. Four major causes of yellow leaves of Ping 'an trees and corresponding measures Scientific water control: There is a secret to dry and wet cycles. Improper watering is the primary culprit that causes yellow leaves. When the water content of the basin soil is less than 30%, the capillary roots begin to dry up; on the contrary, if the water accumulates for more than 48 hours, the roots will suffocate and rot. It is recommended to use the "pot weighing method" to judge: water thoroughly when the pot weight becomes significantly lighter, maintain the watering cycle of 3-5 days in spring and summer, and extend it to 7-10 days in winter. Light and shadow control: The artistic Ping An tree with balanced light and dark has typical tropical plant characteristics and needs to receive scattered light for 4-6 hours per day. A sunshade net is needed to filter 50% of the strong light at noon in summer, and full sunshine can be accepted in winter. Be careful to rotate the flowerpot 45 degrees every 15 days to ensure uniform light reception. If sunburn spots have occurred, they should be moved to the shade environment in time to recover. Precise fertilization: Nutritional ratio equation During the growth period from March to September, leaf-viewing plant fertilizer with a balanced balance of nitrogen, phosphorus and potassium should be applied every 20 days, and the concentration should be controlled at 1,200 - 1,500 times liquid. Iron chelate fertilizer is added when the veins are yellowed, and calcium and magnesium solution is needed when the edges are yellowed. Remember to apply thin fertilizer frequently and avoid burning the roots with thick fertilizer. Pest and pest control: A new biological control strategy for scale insects can be physically eliminated with a 75% alcohol cotton swab. Red Spider recommends using azadirachtin biological agents. Regular spraying of bamboo vinegar can form a protective film to prevent disease infection. Maintaining a ventilated environment and irrigating roots with Bacillus subtilis every month can enhance disease resistance. Analysis of advanced maintenance points In addition to the above core elements, we should also note that: use a mixed substrate of pine needle soil + perlite 3:1 to maintain a slightly acidic environment at pH 5.5 -6.5; maintain the maintenance temperature above 15 ° C in winter; trim 1/3 of the old roots when changing pots every spring to promote new life.
Through systematic conditioning, new leaves can usually be seen germinating in 2-3 months. Remember the golden rule of "observation-diagnosis-treatment" and cooperate with regular maintenance log records to ensure that the safe tree will regain its green vitality.