Nandina domestica has good cold tolerance and can safely overwinter in the north. It is normal to do some simple cold-proof measures during wintering. Although the hot northern winter is cold, it is tolerable for Nandianzhu. It can survive the winter safely by piling leaves on the roots of plants or wrapping the trunk with hay.
Extended data
Nandina domestica is generally required to grow at a temperature of about 0- 10 degrees Celsius in winter, so it should be moved indoors in the northern region before the first frost, preferably in a sunny but cool place. The room temperature should not be higher than 12℃, otherwise, Nandina domestica will easily drop flowers and fruits next spring, and the temperature should not be lower than 0℃.
In winter, the water and fertilizer should be controlled, but it is advisable to spray the branches and leaves with warm water close to room temperature 1 every week to keep the branches and leaves fresh and the red fruits beautiful. If it is planted in a large area, it is best to cover the upper part of the ground and the tree tray tightly with plastic film, so as to ensure the safe wintering of Nandina domestica. At the same time, it is necessary to control the maintenance precautions such as giving water.