The key points of Saussurea involucrata's winter maintenance are: after the temperature drops suddenly in June 5438+ 10, move it indoors for the winter, control watering, and water it once in June 5438+ 10. In addition, it is necessary to stop fertilization, but liquid fertilizer can be applied once during indoor activities, with the temperature controlled at 18-25℃ and often exposed to sunlight.

1. Move it indoors, but catnip is not cold-tolerant. Move indoors for maintenance in time. Usually, it will be maintained in a sunny place indoors in late June, 65438+ 10 (depending on the local climate). Of course, the southern region can safely overwinter outdoors. If you encounter a cold current, you can cover it with plastic bags to keep warm and moist.

2, control watering, winter temperature is low, even indoors, water evaporation is slow. At this time, water should be controlled to avoid root rot caused by too much water and too wet soil. The usual practice is to move indoors at 5438+00 in mid-June, then water it once, and then water it once a month. When the basin soil is too dry, water can be sprayed appropriately.