How many methods are there for sunflower propagation? How to reproduce sunflowers

1) Dividing propagation. The tillering power of the sunflower is strong, and each cluster with normal growth can be tillered by dozens of plants. Divide the plants in the spring after the temperature has risen steadily and when the temperature is high, not when the temperature is low.

Bonsai is divided into pots and divided once every 3 years or so. Select the plants with many tillers and grow robustly, remove them from the container, and remove part of the soil. Use a sharp blade to cut the joint from the base, with a minimum of 3 plants per bush, and take care to keep the plant intact and beautiful.

For the ground-planted sunflower bushes, dig up the clumps from the side of the plants with a blade, and plant them separately, and the mother plant will not move in place. Wounds are immediately disinfected with plant ash, charcoal powder, or sulfur powder, and then planted in 1 pot per bush. If you keep it at about 20 years old, it will quickly regain growth.

2) Sowing seedlings. When the fruit is ripe, it is harvested, and the pulp is washed to remove the seeds. Soak the seeds in 35 warm water for 24-48 hours before sowing.

Seedlings are 8 to 10 cm tall when planted. Seedlings grow very slowly. Loose-tailed sunflower requires high temperature and humidity, cold tolerance is very weak, the seedling stage should not be less than 7 8, and the wintering temperature is best above 12.

When propagating the sunflower by cuttings, it is necessary to select the branches with good growth and health and disease-free as cuttings, and also need to prepare loose and fertile soil rich in a variety of nutrients as the cultivation medium, and also need to water according to the dryness and wetness of the soil to promote the vigorous growth of the sunflower.

1. Propagation by cuttings

The best time for propagation is in March to April in spring and July to August in autumn, because the temperature and humidity at this time are the most suitable for the growth of sunflower, which can improve the survival rate of sunflower, but the specific planting time also needs to be adjusted according to the local climate and environment.

2. Branch selection

When propagating sunflower by cuttings, it is necessary to select branches with good growth and health and disease-free as cuttings, and it is also necessary to cut the lower end of the branch into an oblique incision with scissors to increase the absorption area of the plant, and it is also necessary to insert the branches of sunflower into rooting water and soak for 20-25 minutes to promote the rapid rooting and germination of sunflower.

3. Soil conditions

Sunflower is suitable for growing in loose and fertile soil, when propagating sunflower by cuttings, it is necessary to prepare humus soil rich in a variety of nutrients and good drainage and air permeability, and it is also necessary to water the soil once to keep the soil moist, and then the treated sunflower branches can be inserted into the soil.

4. Maintenance method

Daily maintenance of sunflower, need to be watered according to the degree of dryness and wetness of the soil, keep it moist and slightly moist, to avoid poor growth of sunflower, but also need to spray water on the leaves of sunflower when the weather is too hot, reduce the temperature of the environment, but also need to regularly spray potassium dihydrogen phosphate on the leaves of sunflower to make its leaves more green.