The cutting method of hydrangea

Hydrangea is a common potted ornamental flower and tree, and its propagation methods include ramet, striping and cutting. among them, cutting is what flower friends want to use most, the operation is simple, and the survival rate is relatively high. The following editor will introduce you to the cutting method of hydrangea!

Cutting time of Hydrangea

The most suitable cutting time for Hydrangea is Meiyu season.

Cutting method of Hydrangea

1. Cutting substrate selection: it is used for cutting nutritious soil or river sand, peat soil and other materials. Family hydrangea cuttings are limited to the conditions, it is difficult to get the ideal cutting substrate, it is recommended to use the prepared and sterilized cutting substrate, or with medium and coarse river sand, but rinse with clean water several times before use. Do not use sea sand and river sand in saline-alkali areas, they are not suitable for the growth of flowers and plants.

2. Selection of cutting branches: when Hydrangea was used for tender wood cutting, the sturdy branches of the current year were selected as cuttings when the plants were growing vigorously from the end of spring to early autumn. After cutting off the branches, select the sturdy parts and cut them into segments 5-15 cm long, each with more than 3 leaf nodes. When cutting cuttings, it should be noted that the upper cut is cut flat at about 1 cm above the uppermost leaf node, and the lower cut is about 0.5 cm below the lowest leaf node, and the upper and lower cut should be flat (knife should be sharp). When hardwood cuttings are carried out, after the temperature rises in early spring, last year's robust branches are selected as cuttings. Each cuttage usually retains 3-4 nodes, and the cutting method is the same as that of softwood cuttings.

Post-cutting Management method of Hydrangea

1. Temperature: the optimum temperature for rooting of cuttings is 20 ℃ ~ 30 ℃, which is lower than 20 ℃. It is difficult and slow for cuttings to take root, which is higher than 30 ℃. The upper and lower cuttings of cuttings are easy to be infected by bacteria and rot, and the higher the temperature is, the greater the proportion of rot is. When there is a low temperature after cutting, the heat preservation measure is mainly to wrap the flowerpot or container used for cutting with thin film. When the temperature is too high after hydrangea cutting, the cooling measure is mainly to shade the cuttings, to cover 50: 80% of the sun. At the same time, spray the cuttings 3-5 times a day, with more times of spraying when the temperature is higher in sunny days, lower temperatures in rainy days, and less or no spraying times.

2. Humidity: the relative humidity of the air must be kept at 75-85% after Hydrangea cuttings. The basic requirement for cuttings to take root is to ensure that cuttings are fresh and tender and can be used to produce rooting substances before they take root. However, cuttings without rooting can not absorb enough water to maintain their water balance, so it is necessary to reduce the water evaporation of cuttings by spraying: under shaded conditions, the cuttings are sprayed 3-5 times a day. The higher the temperature in sunny days, the more the times of spraying, the lower the temperature in cloudy and rainy days, the less or no spraying. But with excessive spraying, cuttings are easy to be infected by bacteria and rot, because many kinds of bacteria exist in the water.

3. Lighting: Hydrangea cuttings can not propagate without sunlight, because cuttings should continue to carry out photosynthesis to produce nutrients and rooting materials to supply their rooting needs. However, the stronger the light, the higher the temperature in the cuttings, the more exuberant transpiration of cuttings, and the more water consumed, which is not conducive to cutting. Therefore, after hydrangea cutting, the sun must be shaded by 50% 80%, and then gradually remove the shading net after the root system grows: remove the sunscreen at 4:00 every afternoon on a sunny day, and cover it before 9:00 the next day.