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Which flowers are cold-hardy outdoors in winter and also need vernalization?
Before we know it, it is the end of the year, and the weather is getting colder and colder. In some northern regions, temperatures have even dropped to more than ten degrees below zero these past few days, and people have already put on their winter clothes. At this time, potted flowers and plants are generally best moved indoors for care. But there are a few kinds of flowers that should not be rushed back indoors; you can let them stay outside in the cold. Doing so will make them produce more flower buds during the Chinese New Year.