How to propagate osmanthus through cutting
Osmanthus, as a famous traditional Chinese flower, the propagation technique of cutting is of great concern to flower enthusiasts. Faced with doubts about whether the thick branches are suitable for cutting, this article will explain the key points of cutting osmanthus through systematic operation guidelines combined with the principles of plant physiology.
One, Selection and Treatment of Cutting Materials
1. Branch Selection Criteria
Practice has proven that semi-woody branches have the best root activity, with a diameter controlled between 0.5-0.8cm being optimal. Although thick branches can maintain the survival of bud points, excessive lignification can lead to a decrease in the ability of the cambium to divide, which is the fundamental reason why thick branches are difficult to root.
2. Cutting Treatment Techniques
Retain 2-3 top leaves to maintain photosynthesis, and make a 45° oblique cut at the base to increase the water absorption area. Soaking in an ABT root powder solution of 200ppm for 10 minutes can effectively stimulate the formation of callus tissue.
Two, Substrate Configuration and Tool Preparation
1. Ideal Substrate Formula
According to the ratio of perlite: vermiculite: humus soil = 3:3:4, it ensures both breathability and water retention. Adjust the pH value to 5.5-6.5, and use the high-temperature steam sterilization method before use.
2. Container Selection Points
It is recommended to use a root control pot with a depth of more than 15cm, with a 3cm thick layer of ceramic stones at the bottom for drainage, to prevent waterlogging that can cause the cutting to rot.
Three, Scientific Cutting Operation Process
1. Standard Cutting Technique
Use the straight insertion method, with the depth of insertion being 1/3 of the cutting, and maintain a spacing of 5x5cm. After inserting, lightly press the substrate to ensure the cutting is closely connected with the soil, forming a capillary water film.
2. Intelligent Environmental Control
Set up an automatic misting system to maintain an air humidity of 80%-85%. Use a double-layer shading net to create a diffused light environment, controlling the light intensity to 8000-10000 lux.
Four, Meticulous Management During the Rooting Period
1. Synergistic Control of Temperature and Humidity
Keep the daytime temperature at 25±2°C and no lower than 18°C at night. Use the intermittent misting method, misting for 3 seconds every 15 minutes to ensure the leaves remain moist.
2. Disease Prevention Strategy
Alternate spraying of benomyl 800 times liquid and mancozeb 600 times liquid every week, effectively preventing (T-J) disease and root rot.
Through 30-45 days of systematic care, when the new roots grow to 3-5cm, they can be transplanted. Mastering these core technologies, even cutting beginners can achieve an 80% survival rate, allowing the fragrance of osmanthus to be passed down from generation to generation.