Traditional Culture Encyclopedia - Weather inquiry - Do you need plastic bags when it is cold in March?

Do you need plastic bags when it is cold in March?

Not less than five degrees without plastic bags.

Longevity flowers need to be bagged when the temperature drops below 5 degrees. Longevity flowers belong to short-day plants, and black plastic bags are generally used in autumn and winter. On the one hand, it is to create a darkroom effect through shading, and on the other hand, it is also to keep warm and cold.