What is the reason why Anthurium leaves are rotten?
Anthurium is deeply loved by flower lovers for its unique flower shape and bright color, but it often encounters leaf decay during the maintenance process. This article will systematically analyze the causes and solution strategies of Anthurium rot from multiple dimensions such as environmental regulation, water management, and disease prevention and control to help you quickly save damaged plants. Four major causes of andraeanum leaf rot are caused by sudden drop in temperature and freezing injury. When the environmental temperature is below 10℃, water-stained patches will appear in the cell tissue of andraeanum due to low temperature damage. Especially when there is a sudden cold current in winter, transparency and rot first appear on the edge of the leaves, and in severe cases, the entire plant appears wilted. It is recommended to immediately move the plants to a constant temperature environment of 18-25℃, use transparent insulation films to establish a miniature greenhouse, and gradually restore damaged tissues. Air humidity imbalance During the winter heating period in northern China, the air humidity is often lower than 40%. At this time, the stomata of Anthurium leaves will open excessively, causing cells to lose water, which will then lead to scorched leaf margins and rotten patches. It can be adjusted in three ways: ① Use an ultrasonic humidifier to maintain 60% environmental humidity ② Lay a water-containing ceramsite layer on the bottom of the basin ③ Spray the back of leaves every morning and evening (avoid the low temperature period at noon). Root waterlogging lesions, stagnant water and rotten roots are the primary cause of leaf rot of Anthurium, which is manifested in blackening at the apex of new leaves and soft rot at the base of old leaves. It is recommended to adopt the "three-layer detection method": the best time for watering is when the top soil is dry by 2 cm, the middle soil is slightly moist, and there is no stagnant water on the bottom of the basin. Plants that have rotten roots need to be removed and pruned. Soak them in 1000 times potassium permanganate solution for 30 minutes and then replaced with a new substrate with perlite: peat =3:1. Bacterial diseases invade Leaf spot disease caused by Erwinia chrysanthemum spreads fastest in a high-humidity environment of 28℃. It initially appears as oil-soaked dots on the back of the leaves and expands into brown rot spots within 48 hours. In addition to removing diseased leaves in time, it is recommended to alternately use 72% agricultural streptomycin 4000 times solution (every week) and 3% Zhongshengmycin 800 times solution (every 10 days) for prevention and control. In addition to basic prevention and control measures, it is recommended to apply calcium-containing special fertilizer for leaf viewing plants (N-P-K-Ca=15-5-10-3) every month to enhance cell wall resistance; use Bacillus subtilis every quarter for biological protection; use sunshade nets to control 30% light intensity in summer to prevent leaf damage from the root cause.
Through systematic environmental control and precise prevention and control, it can not only effectively solve the problem of rotten leaves of Anthurium, but also comprehensively improve the plant's stress resistance. It is recommended to regularly check the condition of leaf backs and basin soil, and establish a maintenance log to record changes in temperature and humidity, so that Anthurium can maintain its best viewing condition.