Complete Guide to Common Diseases and Control Methods of Succulents
Succulents have become a new favorite for home greenery with their adorable appearance, but they often face disease threats during maintenance. This article deeply analyzes the characteristics of 5 common diseases and provides scientific control methods to help you create a healthy succulent garden.
Complete Strategy for Red Rot Disease Control
Pathogen Characteristics and Transmission Pathways
This bacterial disease specifically targets succulents with tuberous parts, quickly invading through root wounds. Infected plants show red-brown spots within 24 hours, and the entire plant can rot within 72 hours, making it a "plant killer" that is highly prevalent in summer.
Two-Stage Control Plan
Soak the pot with a 70% thiophanate-methyl wettable powder at a concentration of 1000 times before planting, and apply sulfur powder immediately to cover any wounds. It is recommended to use a biofungicide of Trichoderma every month for root irrigation, establishing a beneficial bacteria barrier.
Systematic Solution for Rust Disease
Symptom Development Pattern
Initially, orange-yellow sporangia appear on the back of the leaves, gradually forming rust-colored scars on the stems. This fungal disease accelerates transmission when humidity is greater than 75%, causing plant epidermal keratinization.
Chemical + Physical Comprehensive Control
In addition to using 12.5% diniconazole at a concentration of 2000 times for spraying, it is recommended to alternate with copper preparations. Regularly remove disease spots with a soft bristle brush and supplement with phosphorus and potassium fertilizers to enhance disease resistance.
(T-J) Disease Emergency Response
Identification of High-Incidence Environments
The plum rain season (temperature 25-30°C/humidity 85%+) is the main outbreak period, with the pathogen invading through stomata, forming water-soaked concentric ring spots, and causing stem breakage within 48 hours.
Environmental Control Techniques
Install circulating fans to maintain air circulation and use a substrate with 70% particle content. Immediately spray with a mixture of methyl thiophanate at a concentration of 1000 times and brassinolactone when disease spots are found, blocking the expansion of the pathogen.
Special Management of Rot Disease
Complete Guide to Common Diseases and Control Methods of Succulents
Special Vulnerable Groups
Cactaceae plants have a disease incidence rate of 83%, showing damping-off disease in the seedling stage and foul-smelling soft rot in mature plants. Watering at night with low temperatures (<15°C) can significantly increase the risk of disease.
Stereoscopic Protection System
Establish a three-level protection system of "prevention-monitoring-treatment": apply metalaxyl in winter, hang humidity monitors during the growing season, and dig out the rotting tissue and seal the opening with Bordeaux paste after the disease occurs.
Prevention of Physiological Diseases
Diagnosis of Environmental Imbalance
Sunburn is characterized by purple-red sunburn spots, lack of light causes stem elongation, frostbite leads to translucent water, and drought causes leaf shrinkage. It is necessary to record environmental parameters daily and adjust them in a timely manner.
Intelligent Maintenance Solution
Configure intelligent grow lights (PPFD 200-400 μmol/m²/s), use temperature and humidity联动 control systems, and adopt siphon-type water supply flower pots to establish a stable growth microenvironment.
By scientific diagnosis and precise control, the success rate of succulent maintenance can be increased by 76%. It is recommended to establish a disease observation log and alternate with regular medication to keep your beloved succulents free from disease困扰.