Perennials need the wetter weather and cooler nighttime temperatures in fall to focus their energy on establishing roots. While annuals like impatiens and begonias bloom for just one season, perennials will die back in winter and return in spring.
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Weekly Gardening Tips for Your Area
Garden wisdom holds that spring is the time to plant, when the earth is just waking up from winter’s chill and the long, hot days of summer are ahead.