What to Do if Your Echeveria Plant Has Pests
Among the many succulents, Echeveria is particularly loved for its thick, emerald-green leaves. However, recently many plant enthusiasts have reported yellow spots and withered leaves on their plants, which are mostly caused by scale insect infestations. As a typical succulent stem plant, Echeveria is highly sensitive to pests, and today we will systematically analyze pest control solutions.
Key Points for Preventing and Treating Pests on Echeveria
Characteristics of Scale Insect Damage
This white pest, with a diameter of only 1-3 millimeters, often gathers on the back of leaves and stem joints to suck sap. The honeydew it secretes can cause sooty mold, resulting in black mold spots on the leaves. The peak period of pest infestation is from late spring to early summer. Immediate action is required when sticky secretions are found on the leaf surface.
Four-Step Physical Removal Method
It is recommended to use a soft-bristled brush蘸取75% alcohol to gently brush the pest along the leaf veins. Stubborn eggs can be treated with a cotton swab dipped in vinegar, and the plant should be rinsed with water afterward. Repeat 2-3 times a week for three weeks to completely eradicate the pest source.
Chemical Control Proportion Scheme
40% omethoate emulsion should be diluted 1500 times and sprayed mainly on the back of leaves. It is recommended to apply the pesticide in the evening to avoid strong sunlight burning the leaves. After application, cover the plant with a bag and let it sit for 2 hours to increase the pest control efficiency to 90%.
Echeveria Pest Prevention System
Three Elements of Environmental Regulation
Maintain a day-night temperature difference of 8-10°C and keep the humidity below 50%. Use red and blue light spectrum supplemental lights for 4 hours a day to enhance plant resistance. The cultivation medium is recommended to be mixed in a ratio of珍珠岩:蛭石:河沙=3:2:5 to ensure good drainage and ventilation.
Preparation of Natural Insect Repellents
In addition to garlic water, you can boil 50g of dried chili peppers, cool and filter the liquid, and add 5ml of dishwashing liquid to make an insect repellent spray. Soak onion peels (200g/1L water) for 3 days, and spray weekly to form a natural protective film.
By establishing a complete prevention-identification-control chain and complementing it with monthly applications of wood ash (10g per pot), you can effectively control pest recurrence. Remember to rotate the pot regularly to ensure even light exposure, prune dense branches in time, and keep your Echeveria in a healthy state.