Some barberry cultivars babretain their leaves throughout winter. The wintergreen barberry's leaves turn bronze or red in color, and remain on the shrub during the winter months. Mentor and Japanese varieties lose their foliage in colder weather.
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Angela Nelson is a virtual assistant and freelance writer. She has been publishing online articles since 2008 for GardenGuides, eHow and Answerbag. Nelson has a passion for small business and flower gardening, which is portrayed in her writing.