How to propagate Osmanthus tree through cutting
The Osmanthus tree, as a famous traditional Chinese flower, is deeply loved by people for its fragrant and richly scented blooms. Mastering the correct cutting propagation technique can not only continue excellent varieties but also experience the wonderful process of plant growth. This article will systematically explain the complete operation process of cutting propagation for Osmanthus trees, accompanied by detailed illustrations to help you easily achieve Osmanthus propagation.
I. Core Steps of Cutting Propagation
Best Time Selection
It is recommended to propagate Osmanthus trees from May to June when the temperature is stable at 20-25℃ and the young shoots are semi-woody, which allows for fast wound healing and a high rooting rate. Autumn, from September to October, can also be operated, but attention should be paid to preventing cold and keeping warm.
Pruning Techniques
Select healthy branches from the current year with a diameter of about 0.5 cm. Use a three-step processing method: ① Remove the lower leaves, retaining only the top 2-3; ② Make a 45-degree diagonal cut to increase the water absorption area; ③ Soak in root-promoting solution for 10 minutes to promote cell activation.
Substrate Formula Optimization
The ideal substrate ratio is: decomposed leaf soil: perlite: river sand = 5:3:2. Adding a small amount of vermiculite can improve water retention, and mixing with carbendazim for disinfection ensures a sterile environment.
II. Details of Cutting Operation
Scientific Cutting Technique
Use the shallow insertion method, with a depth of 2-3 cm into the soil being ideal. Make a hole with a bamboo stick before inserting to avoid damaging the cut, maintaining a spacing of 5 cm or more. After insertion, lightly press the substrate to ensure the branches are stable, and spray to moisten the substrate slightly.
Environmental Control Points
Set up a mini greenhouse: ① Cover with transparent film to maintain 85% humidity; ② Use double-layer shading nets to filter strong sunlight; ③ Ventilate 30 minutes in the morning and evening. Keeping the substrate temperature at 22-28℃ can speed up root growth.
III. Post-Propagation Maintenance Management
Water Control Techniques
In the early rooting stage (1-20 days), maintain substrate moisture at 40%, and gradually increase to 60% after 20 days. Use the immersion pot method to replenish water, avoiding direct watering that could cause the branches to rot.
Fertilizer Application Timing
After new roots have grown to 3 cm, apply a diluted solution of potassium fulvate at 2000 times. Spray phosphorus and potassium fertilizer every 15 days to promote root development.
IV. Appreciating Results and Transplanting
How to propagate Osmanthus tree through cutting
When new buds have grown 3 sets of true leaves and the roots are well-developed, it is time for transplanting. Perform the operation on a cloudy day, transplanting with soil to a seedling pot with a diameter of 15 cm, and maintain scattered light during the acclimatization period.