① time: the cutting time of Prunus deltoides is from March to June, because the branches grow vigorously and have strong vitality in spring, and the humidity and temperature of soil are more suitable for the growth and propagation of plants.
② temperature: when the indoor temperature is above 20 ℃ in winter in the north area, cutting can also be carried out, because its suitable growth temperature is 20-25 ℃, the indoor temperature in the north is dry and warm, and it is also easy for plants to survive.
Select the annual semi lignified branches, trim them to 10-15cm, insert them into the soil, the depth is about 4-6cm, and drill holes in the soil, then pour water and move them to the shade of 20-25 ℃ for curing, take root in 20-25 days, wait 40 days for potting.
After rooting, it is necessary to move it to the sunlight for full photosynthetic response, to ensure at least 8-10 hours of sufficient light every day, so as to make the plant more robust.
After cutting, we need to apply fertilizer outside the root, apply nitrogen, phosphorus and potassium fertilizer, and spray one thousandth of potassium dihydrogen phosphate solution and urea once every ten days.
