There are four stages in the growth process of lettuce: germination, seedling, rosette and heading stages. The germination stage is from seed germination to cotyledon unfolding, the seedling stage refers to the time from the appearance of true leaves to the unfolding of the fifth leaf, the rosette stage is from the perimeter of the plant to the completion of the second leaf sequence, and the heading stage refers to the accelerated curling of the heart leaves. Lettuce growing seasonThe growth cycle of lettuce is not absolute, it is approximately 60-90 days. Lettuce is suitable for planting in spring and autumn. It is planted in spring from February to April and in autumn from August to September. The lettuce planted in spring can be harvested around May to June, and the lettuce planted in autumn can be harvested around October to November. Lettuce Growing ConditionsThe suitable growing temperature for lettuce is 15-25 degrees. Lettuce is suitable for growing in a cold and humid environment. When the temperature is relatively high, cooling measures should be taken. Lettuce is not strict about the soil and is suitable for growing in loose and fertile soil. Management of lettuce during the growing periodLettuce has a relatively high requirement for water, so when planting, you should pay attention to watering it frequently, usually once every 7 days. When the temperature is relatively low, try to reduce the number of watering. Lettuce has a relatively high demand for fertilizer, so during the period of vigorous growth, you should apply more fertilizer appropriately. |
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