There is a hard shell on the surface of coriander seeds, which affects the germination rate of coriander. Therefore, before planting cilantro, it is necessary to crush the hard shell of cilantro seed skin in advance, which will improve the seedling rate. After crushing the hard shell, cilantro can be soaked in water for a day to promote germination, so that the seedling rate of cilantro is relatively high. Caraway seeds are very small and it is difficult to sow evenly when sowing, so the seeds can be mixed with sand, which is conducive to even sowing of cilantro seedlings. After planting cilantro, the surface is covered with a thin layer. If the temperature is too high at the time of planting, you can also cover a thin layer of straw after sowing, which can prevent sunburn of rapeseed. Once the coriander has germinated, you can lift the straw and expose the seedlings to sunlight so that the coriander grows well and quickly.

Coriander does not need to be fertilized after applying sufficient bottom fertilizer before planting. If the coriander is weak, you can fertilize outside the root according to the situation. Cilantro planting water is indispensable. General planting of cilantro before watering enough water, cilantro grow two true leaves and then water, usually a small amount of water. During the growing period of coriander, usually watering once in 6-7 days, watering time gradually reduced with the growth of coriander. Pests and diseases of coriander are rare, but when they do occur, they can affect the quality and yield of coriander. Therefore, pesticides can be sprayed in time to prevent pests and diseases during periods of high incidence of coriander pests and diseases. Coriander seeds are very small and too high or too low temperature will affect the germination of coriander. So planting cilantro before the bottom fertilizer, the bottom fertilizer can mainly be fully decomposed organic fertilizer, coupled with an appropriate amount of calcium and phosphorus compound fertilizer, sufficient nutrients can promote the germination of cilantro.

With the maturity of planting technology, greenhouse planting is becoming more and more popular, and the varieties of cilantro are more diversified, so cilantro can be planted all year round. So, when deciding the best time to plant cilantro, you need to consider the temperature. Because coriander prefers cool but does not tolerate high temperatures, the optimum temperature for growth is 17-20, growth is slow above 20 and stops above 30. Soak coriander seeds in 40 warm water for 24 hours, then strain them out and place them in a wet gauze bag in a moist, ventilated area to germinate. In summer cultivation, seeds can be germinated by soaking at low temperatures. After soaking for 24 hours, wrap the seeds in a wet cloth and place them in an environment of about 20 to germinate, and they can be sown in 3-4 days when they appear white.