Culture methods and matters needing attention of calendula

Calendula is a biennial herb of Compositae, which has very high ornamental value. It is distributed all over our country, and calendula is very suitable for decorating gardens and cities. And marigold is rich in vitamins, can be used to make tea, but also has the effect of relieving spasm and promoting digestion. So how to raise marigolds? Today, the editor has brought you the breeding methods and points for attention of marigolds. Let's take a look!

1. Soil selection

Before raising marigolds, we first need to choose the planting soil. The soil should be deep, soft and transparent in drainage and irrigation. Every spring, after the temperature gradually rises, the plough layer of the soil is also slowly thawed. To do a good job in soil preparation, turn the soil about 22 centimeters deep. Fine crush the surface soil, and then suppress the soil to level the field. When preparing the soil, we can also apply an appropriate amount of base fertilizer according to the fertility of the soil. The base fertilizer is mainly organic fertilizer, combined with appropriate amount of nitrogen fertilizer, phosphate fertilizer and other compound fertilizer.

2. Methods of reproduction

The propagation method of calendula is mainly by sowing and reproduction. The best sowing time is in autumn and early spring, and if possible, it can be sowed in the greenhouse. First of all, we should select good seeds, mainly full, wound-free seeds, and pick out withered seeds. Under normal circumstances, 120 seeds weigh about one gram. It is best for seeds to be sterilized and germinated, and if it is a potted plant, the soil also needs to be sterilized. Cover with a layer of fine soil after sowing and sprout about a week later. The germination rate of seeds is generally about 80%, and its validity can be as long as three years.

3. Water and fertilizer management

Calendula has a greater demand for water, if the lack of water will lead to plant dwarfism and reduce ornamental. However, if it is watered too much, it is easy to cause the overgrowth of the plant and reduce the flowering rate. Therefore, we should pay attention to control watering, generally should be watered once in June, July and August. According to the soil moisture to control the amount of watering, and then in the bud period, watering should be combined with fertilization. To improve the flowering rate and flower quality, if it is for the purpose of collecting flowers, then appropriate extra-root topdressing should be applied to increase the amount of flowers.

4. Points for attention

When the marigold is planted, we need to pay more attention to the temperature. The temperature at which marigolds grow is generally about 5-15 degrees. If the temperature is too low, you should pay attention to cover the film to avoid frost damage, but the winter temperature should not exceed 10 degrees, otherwise the marigold is easy to grow. In summer, we should pay attention to cooling to avoid high temperature affecting the growth of calendula. Then we should also pay attention to control the light so that it can not be irradiated by direct light to prevent the leaves from being burned. However, it should not be allowed to be in a dark environment, otherwise it will be very disadvantageous to its growth.

The above is a brief introduction of marigold culture methods and matters needing attention. That's all for today's introduction. This article is for reference only. I hope it can help you all.