1、 When the temperature is above 10 ℃, asparagus can survive the winter outdoors in frost free areas

The outdoor temperature is stable above 10 ℃ and there is no frost weather all year round, so it is certainly no problem for asparagus to overwinter outdoors. However, even if you live in Hainan, you may encounter cold currents. Therefore, for the sake of asparagus's small life, it is best to move to indoor maintenance in winter, or set up a warm shed outdoors to prevent cold

2、 When the temperature is below 10 ℃ and above 5 ℃, water less and set up a warm shed. Asparagus can survive the winter outdoors

The outdoor temperature has dropped below 10 ℃, but not to 5 ℃. You can spend the winter outdoors by watering less, keeping the soil dry as much as possible, and setting up a warm shed. It should be noted that less watering does not mean that water is cut off. When the temperature rises, slide some water along the edge of the basin to ensure that asparagus will not be killed by drought

3、 When the temperature is below 5 ℃, asparagus cannot survive the winter outdoors, and most of them will be frozen to death

If the outdoor temperature drops below 5 ℃, don't struggle. Outdoor open cultivation can definitely freeze asparagus to death. Therefore, it's best to move asparagus into indoor maintenance before the low temperature in autumn and winter every year, so as to ensure that the indoor maintenance temperature is above 10 ℃ and more sun exposure, which is conducive to the accumulation of nutrients, green leaves and more sprouting of asparagus