What to do if the first love plant has spots and how to prevent and treat black spot disease in succulent plants.

What to Do When the First Love Plant Develops Spots

Enthusiasts of succulents are often troubled by the sudden appearance of black spots on the leaves of their First Love plants. Once affected, this delicate plant not only loses its ornamental value but may also trigger a chain of infections. This article will delve into the causes of black spot disease and provide a systematic prevention and treatment plan to help you protect your beloved succulent plants.

Formation Mechanism of Black Spot Disease in First Love Plants

Environmental Causes of the Disease

The hot and humid environment of summer is the main trigger for black spot disease. When the temperature consistently exceeds 28°C and air circulation is poor, water droplets left on the leaf surface create a miniature steam bath, providing an ideal breeding environment for fungal spores.

Mistakes in Maintenance Operations

Watering directly into the leaf core leading to积水, using unsterilized garden soil that carries pathogens, and leaving the plant exposed to heavy rain during the rainy season are all improper maintenance practices that significantly increase the risk of infection. Experimental data shows that when the leaf surface remains moist for more than 6 hours, the risk of infection increases by 80%.

Four-Step Method for Preventing and Treating Black Spot Disease

Emergency Isolation and Treatment

Infected plants should be isolated immediately, and the diseased leaves should be cut off after sterilizing tools with 75% alcohol. Gloves should be worn during the operation to avoid direct contact with the pus exuded from the lesions.

Light Therapy for Killing Fungi

Placing the plant in direct sunlight for 2 hours daily between 10-14 o'clock can effectively inhibit the spread of fungi. Combined with a spray of mancozeb solution (1:1000) weekly for 3 weeks, significant improvement can be seen.

Environmental Control Strategies

Install a mini circulating fan to maintain air circulation, and use a substrate with 70% particle content to ensure proper drainage. Monitoring shows that a continuously ventilated environment can reduce the recurrence rate of the disease by 65%.

Long-Term Preventive Plan

Apply Bacillus subtilis biological preparations monthly during spring and autumn, lay a rainproof film before the rainy season, and rotate the pots regularly to ensure even light exposure. Establish a maintenance log to record temperature and humidity changes and the plant's condition, achieving precise control.

Through systematic prevention and scientific maintenance, 85% of early-stage cases can achieve complete recovery. The key is early detection, rapid intervention, and continuous optimization of the maintenance environment to restore the healthy glow of your First Love succulent.