Yushu leaves turn yellow. What happened?
As a deeply loved succulent plant, the yellowing problem of Yushu leaves puzzles many gardening enthusiasts. This article will systematically analyze the causes of yellow leaves from four core maintenance dimensions and provide professional solutions to help you quickly restore plant vitality. Three major causes of Yushu's yellow leaves and treatment options: Light imbalance causes metabolic disorders. Yushu is a strongly positive plant that needs 4-6 hours to scatter light every day. When the light intensity is less than 3000lux for a long time, the synthesis of chlorophyll in leaves is blocked, showing gradual yellowing. It is recommended to use the "stepped light filling method": move to the east-facing sill in the first three days, gradually transition to the south-facing balcony, and adjust the light intensity with the sunshade net. Improper water management, damage to root systems and fleshy stems make Yushu extremely drought tolerant, and the soil moisture needs to be controlled at 30-40%. It can be judged by the "bamboo stick detection method": insert the bamboo stick into 2/3 of the pot soil, leave it for 2 minutes, pull it out, and then water it when there is no trace of moisture. If yellow leaves have accumulated water, the "sandwich soil replacement method" should be used immediately: keep 1/3 of the soil protective soil and replace the more breathable vermiculite + perlite mixed substrate (ratio 3:1). During the growth period (March to September) due to nutritional disorders, nitrogen, phosphorus and potassium balanced slow-release fertilizer (NPK10 -10-10) needs to be applied every 20 days, and the concentration is controlled at 0.1%. When fertilizer damage occurs, the "siphon flushing method" is used: immerse the flowerpot in a clear water bucket, keep the water level 2 cm higher than the pot soil, and continue to soak for 30 minutes to replace the excess fertilizer. Advanced maintenance to prevent the recurrence of yellow leaves. Preventive spraying with azedra oil (diluted 500 times) every month can effectively prevent and control pests such as red spiders. It is recommended to adopt the "333 Conservation Method": maintain the temperature difference between day and night at 3℃, prune roots and replace pots three times a year, and update the trunk cuttings every three years. Use EC value detection pen to control the soil salt concentration within the ideal range of 0.8-1.2mS/cm.
By systematically adjusting the three major factors of light, moisture and nutrients, and cooperating with scientific pest and disease prevention and control, the Yushu yellow leaf problem can be fundamentally solved. It is recommended to establish a maintenance log to record the time of watering and fertilizing each time and plant changes, and gradually master the personalized maintenance rhythm to make your jade tree shine again.