Ensure good planting conditions. On the 15th to 20th day after planting, when the garlic grows to 30-40 cm, the first harvest can be carried out. After that, the interval will be about 15-20 days. , garlic can grow to about 20 centimeters, and it can be harvested twice, but the yield of the second harvest is relatively low, far less than the first time. By the third time, the yield of garlic will be even lower, and The quality is also poor.