Rich tree camellia... Yellowing leaves
Planting yellow leaves in green is a common problem in family maintenance, especially popular ornamental plants such as Fortune Tree, Camellia Tree, and Happiness Tree. Yellowing of leaves often indicates a survival crisis. Based on 20 years of horticultural experience, this article systematically sorts out the causes of yellow leaves of the three major plants and scientific treatment plans to revitalize your green plants. The five common causes of yellow leaves in plants are unbalanced in watering management. Yellowing of young leaves is accompanied by wilting of old leaves, indicating water and rotten roots; if old leaves are scorched and spread upwards, the degree of watering needs to be checked. Fortune Tree uses the "pot weighing method" to judge the water shortage (water needs to be replenished when the pot weight is reduced by 1/3), and Happiness Tree keeps the surface layer of 3 cm soil dry before watering. The yellow leaves of camellia lacking nutrients are often accompanied by yellowing of green edges of the veins, so ferrous sulfate (concentration 0.5%) is needed; Fortune trees apply nitrogen, phosphorus and potassium compound fertilizer (20-20-20) every month, and bone meal is added to replenish calcium when changing pots of Happiness trees. Analysis of the characteristics of maintenance points. Light regulation of Fortune Tree requires 4 hours to scatter light every day and cover shade from 10:00 to 15:00 in summer. In winter, full-spectrum plant lights can be used to fill light, and the distance from the crown width of 50cm can be illuminated for 6 hours. Camellia soil improvement and preparation of acidic substrate: peat soil: pine needle soil: perlite =5:3:2, irrigated with citric acid water (pH 5.5 -6.5) every quarter. In the northern region, it is recommended to use pottery basins to enhance air permeability. In the early stage of preventing and controlling leaf spot disease, 800 times of mancozeb solution was used, scale insects were wiped with a 75% alcohol cotton sheet, and red spiders sprayed matrine biopesticide once every 7 days for 3 consecutive weeks. Advanced maintenance techniques Establish a maintenance log to record watering/fertilization time, and use a soil detector to monitor EC values (suitable range 0.8-1.2mS/cm). During the recovery period of yellow leaves, algae (1000 times liquid) are sprayed to enhance stress resistance, and the pot method is used to maintain humidity in the small environment.
By systematically investigating and treating the causes of yellow leaves, and cooperating with scientific maintenance plans, more than 90% of yellow leaf problems can be effectively reversed. It is recommended to carry out preventive maintenance every quarter, including pruning of excessively dense branches, balanced light exposure to rotating flowerpots, and replenishing microbial inoculants to fundamentally protect plant health.