When is the best time to sow calendula? Explain the matters needing attention in planting calendula at 3 o'clock!

The leaves and petals of calendula are edible and are often used as the decoration of dishes, with the effect of clearing away heat and detoxification, promoting blood circulation and regulating menstruation. Many friends start planting when they see the value of calendula, but they don't know when to sow the seeds. Today, I will explain in detail the matters needing attention in the planting of marigold!

When is the best time to sow calendula seeds?

Calendula has two choices of spring sowing and autumn sowing. If you choose to sow in spring, it is most suitable to sow from February to May, and if you choose to sow in autumn, it is the most suitable from August to October, in which the germination rate of calendula is the highest. If you want to know more specific sowing time, you need to make a specific analysis according to the local climate and other conditions. after all, our country has a vast territory, including different climatic and topographic areas, and there are obvious differences in air temperature. the most suitable sowing time is not completely fixed.

2. Seed planting method of Calendula

1. Seed treatment

The seeds should be soaked in warm water for 3 to 10 hours before planting, until the seeds absorb water and swell up. This operation can be omitted for some common seeds that are easy to germinate, but in order to improve the germination rate of calendula, it can be soaked properly.

two。 Sowing method

For small seeds that are difficult to pick up with hands or other tools, wet one end of the toothpick with water, stick the seeds one by one on the surface of the matrix, and cover the matrix 1 cm thick.

Then put the seeded flowerpot into the water, the depth of the water is 1 / 2 / 2 / 3 of the height of the flowerpot, let the water soak up slowly so as not to wash the seeds up.

3. Maintenance after sowing

After sowing in autumn, to avoid the cold wave and low temperature attack, you can use plastic bags to pack the flowerpot to keep warm and moisturizing. After the seedlings are unearthed, uncover the film and let the seedlings be exposed to the sun before or after 9 o'clock every morning, otherwise the growth of the seedlings will be very weak.

After the seeds emerge completely, there can be appropriate inter-seedlings, leaving a certain distance between each plant, and pull out the seedlings that do not grow well. When most of the seedlings grow more than 3 leaves, they can be planted in pots.

The above three points are the marigold seed method, which is very suitable for students who plant for the first time.

Explain in detail the matters needing attention in the planting of marigold at three and three o'clock.

1. Select soil

Calendula has no special requirements for soil, in general, well-drained soil can provide its normal growth, but in order to avoid diseases and insect pests, it is best to deep turn the soil before sowing and, if possible, it can also be disinfected. It is best to choose sandy loam or cultivated soil with fertile, loose and well drained soil.

two。 Budding treatment

Soaking the seeds in warm water for one or two days before sowing can not only make the seeds germinate quickly, but also ensure the uniformity of budding. in the process of soaking the seeds, the withered seeds floating on the surface can also be removed, which can also effectively improve the germination rate; in addition, when sowing, the soil cover should not be too thick, about one centimeter will be fine.

3. Keep the right temperature

The suitable temperature for the growth of calendula is 7-20 ℃. The seedlings can withstand the low temperature of minus 9 ℃ in winter, and the suitable temperature for adult plants is 0 ℃. If the temperature is too low, it needs to be protected by thin film, otherwise the leaves are vulnerable to freezing damage. Calendula grows when the winter temperature is above 10 ℃. With the increase of temperature in summer, the stems and leaves grow vigorously, the flowers become smaller and the petals decrease significantly.

Calendula is neither resistant to wind cold nor high temperature, and cannot grow normally at temperatures higher than 34 degrees Celsius or less than 4 degrees Celsius, and its most suitable growth temperature is about 15 to 20 degrees Celsius. In addition, calendula likes a relatively humid growth environment, but if the humidity is too high, it will also lead to early withering of flowers and even root decay and death.

The above three points are the things we need to pay special attention to when planting calendula.

Summary: the above content is the relevant knowledge of marigold planting, I hope it can help you. This paper is integrated with the network.

Time: 2019-03-13 Click: