What is the method for propagating Kalanchoe leaves?
As a popular ornamental variety among succulents, Kalanchoe is well-known for its bright flower colors and strong adaptability, making it a common plant in family gardens. Leaf propagation, as its unique method of reproduction, is both economical and preserves the characteristics of the mother plant. Mastering the correct operation method can significantly increase the success rate of propagation.
Key preparations before propagation
Criteria for selecting high-quality leaves
Select fully mature leaves from the middle and lower parts, requiring the leaf surface to be plump without insect spots and the petiole to be thick and healthy. Cut the leaves 2mm from the base with scissors disinfected with alcohol, leaving the complete growing point. The drying process should be carried out in a shaded place for 2-3 days, waiting for the cut surface to form a semi-transparent healing tissue, which effectively prevents later decay.
Points to consider when choosing a cultivation container
It is recommended to use an unglazed ceramic pot with a diameter of 15cm, which must have a drainage hole at the bottom. The matrix should be mixed according to the ratio of vermiculite: perlite: peat soil = 1:1:2, which can both retain water and breathe. Leave 1/3 space when filling the soil, convenient for subsequent covering operations.
Specific steps for leaf insertion
Tips for root promotion
Dilute the indole butyric acid solution to a concentration of 500ppm and apply it evenly to the cut surface with a cotton swab. Insert the leaf at a 45-degree angle into the matrix, with the depth of the soil being 1/3 of the petiole. Keep a 5cm spacing between adjacent leaves to avoid root entanglement. Use the immersion pot method to water for the first time to ensure the matrix is evenly moist.
Methods for environmental regulation
Keep a constant temperature of 20-25°C and use a transparent storage box to create a simple greenhouse. Ventilate for 30 minutes each in the morning and evening, controlling the scattered light exposure time to within 4 hours. Maintain the air humidity between 60%-70%, which can be adjusted by a misting humidifier.
Scientific management after root formation
Best time for transplanting
When the white fibrous roots grow to 3cm and secondary branches appear, choose a sunny day for transplanting. Move the original soil ball into a new pot and add decomposed pine needle soil to enhance fertility. Keep the matrix slightly moist during the transition period and gradually increase the light intensity after two weeks.
Key points for daily maintenance
Apply a phosphorus and potassium fertilizer solution every month during the growing season, with the concentration controlled within 0.1%. In the hot summer season, provide 50% shading and maintain a temperature of over 10°C in winter for overwintering. Timely remove the old leaves from the base to promote ventilation and light penetration of the plant.
Through a systematic operation process, even gardening beginners can successfully propagate Kalanchoe leaves. The key is to grasp the three core links of disinfection treatment, environmental regulation, and water management, combined with patient observation. It takes about 45 days to obtain a strong new plant. It is recommended to carry out propagation operations in spring and autumn when the plant's physiological activity is the strongest, and the success rate can reach over 85%.