Time and method of planting lettuce in the north

Planting time of lettuce in the north

Lettuce in the north has strong adaptability and a certain degree of cold resistance. It can generally be planted in spring from April to May, or in autumn from September to October. If planted in a greenhouse, it can be planted all year round as long as temperature control measures are taken.

How to plant lettuce in the north

1. Land preparation and fertilization

Northern lettuce prefers loose, fertile, well-drained, slightly acidic sandy loam. Before planting, the selected land needs to be deep plowed to make the soil loose and breathable. When cultivating the land, an appropriate amount of organic fertilizer needs to be applied to the soil to improve the soil fertility so that the lettuce can grow vigorously.

2. Seed treatment

Choose lettuce seeds that are more cold-resistant. You can process the seeds before planting to increase their germination rate. Soak the seeds in clean water for 6-7 hours to allow the seeds to absorb enough water. Then wrap them with a wet cloth and place them in an environment of 20-25 degrees to germinate. Wait until the seeds turn white before sowing and planting.

3. Planting method

After the lettuce seeds are processed, they can be sown into the soil. Then, keep warm and moist, and the seeds will soon germinate and grow. When the lettuce has 5-6 true leaves, it can be transplanted. The plant spacing can be controlled at about 20 cm. Apply thin fertilizers frequently during later maintenance.

Precautions for planting lettuce in the north

After planting lettuce in the north, field management must be done well. Ten days after planting, use manure water for irrigation. At the same time, you can add a little urea in the middle. When the plant grows to 25 cm, urea should be applied. When the stem of the lettuce swells, apply fertilizer mainly composed of urea and supplemented by potassium fertilizer. In addition, each fertilization needs to be combined with watering and weeding.