1、 Winter method of digging out roots

The cold resistance of dahlia is not very high. The temperature in winter is relatively low. We must deal with it in time for heat preservation. The main stem above the root should be trimmed off after frost, and the soil in the flowerpot should be poured out to take out the root. The root is not cold resistant, so it should be buried in sand. It should also be placed at a temperature of about 5 degrees. Note that the temperature should not be too high, otherwise the root tubers are easy to germinate prematurely, which will also affect the growth of the next year

2、 Winter method without digging roots

Dahlias can not dig out roots during the winter, but we must pay attention to the maintenance methods. When the frost falls, cut off the main pole above, and then put it in a place with light indoors with a basin of soil. Pay attention to the indoor temperature. It can't be too high. Just keep it between 5 degrees and 10 degrees. In addition, we should also pay attention to not watering too much. We should keep it dry at ordinary times. Watering once or twice throughout the winter will affect the winter

3、 Winter precautions

No matter which way you spend the winter, you should pay attention to the temperature. The temperature should not be too high. Warm areas in the South can be placed outdoors, while most areas in the north have heating. It must be placed without heating. Too high temperature will germinate in advance and affect the growth and flowering in the later stage