1. Planting time.
The time it takes to grow cosmos usually depends on the type of climate and season in which it grows. In warm and hot climates, sowing is usually between spring and summer, while in colder climates, planting can be done in spring and autumn. In some areas, cosmos can also be grown in winter, but extra warmth is required.
Second, choose the seeds of cosmos
Choosing healthy and high-quality seeds is the key to growing cosmos successfully. It is recommended to choose mature seeds for planting, because their hereditary and vitality are more stable, and they are easier to germinate and grow.
3. Choose the soil.
Cosmos is adapted to grow in soft, breathable, well-drained soil. The organic matter content in the soil should be 2More than 5%, you can choose to add some humus or peat soil to increase the fertility of the soil.
Fourth, choose a container.
Use a container large enough for planting, at least 30cm deep, to accommodate the root system of cosmos. Ceramic or plastic containers are preferred to provide good breathability.
Fifth, the configuration of culture soil.
Pack the loose soil into a container and water thoroughly until water comes out of the bottom of the container. Some organic fertilizers can be added to improve the fertility of the soil.
6. Sowing. Spread the selected seeds evenly on the moist soil surface, then cover them with a thin layer of soil on top of the seeds. The distance between the seeds should be as uniform as possible.
7. Watering. Gently spray water on the surface of the soil with a watering can to keep the soil moist. Do not allow water to accumulate at the bottom of the container to avoid the seeds being soaked.
8. Cover the film.
Cover the surface of the container with a layer of plastic wrap or plastic film to maintain humidity and temperature around the seeds. This will help to promote the germination and growth of the seeds.
9. Control the temperature.
Maintaining the right temperature is essential for the germination and growth of cosmos. It is preferable to plant in an environment of about 25 years, if the ambient temperature is too high or too low, it may affect the germination rate of the seeds.
10. Lighting conditions.
Cosmos needs plenty of sunlight to grow and bloom properly. In the case of insufficient light, it may lead to long growth and poor flowering. It is recommended to place cosmos in a sunny place for maintenance, such as a balcony or outdoor patio. At the same time, it is also necessary to take appropriate shading measures to prevent excessive sun exposure.
Ten. 1. Fertilization.
During the growth of cosmos, the right amount of fertilizer can be added to provide the necessary nutrients. Organic fertilizers such as well-rotted poultry manure or plant residues can be selected and mixed with water to water on the soil surface. But be careful not to over-fertilize so as not to harm the plant roots.
Ten. 2. Pest control.
Regularly inspect the growth of cosmos, detect signs of pests and diseases in time and take control measures. A combination of biological and chemical control methods can be used for control. For example, insect growth regulators are used to control the number and reproduction of insect pests. At the same time, it is also necessary to pay attention to keeping the plants clean and healthy, and pruning dead and diseased leaves in time. This reduces the occurrence of pests and diseases and promotes healthy plant growth.
Ten. 3. Harvest the seeds.
When the flowers of cosmos wither, the seeds can be harvested. Mature seeds can be collected and stored in a dry place for later use after drying, or for sowing in the current year. Pay attention to the careful operation during harvesting, so as not to damage the flowers and seeds themselves, so as not to affect the quality and germination rate of the seeds.