Bluefield Daily Telegraph, Bluefield, WV


November 7, 2012

New flower varieties excel at overwintering

"Overwintering" plants usually means deadheading, dividing, pruning, mulching or bringing them indoors to protect them from the cold. Increasingly, though, varieties are being introduced that flower into winter and rebound in spring. They need no special care and deliver more blooms for the buck.

Two noteworthy examples are Ball Horticultural Co.'s Cool Wave petunias and pansies.

"These flowers have more hardiness because they were developed in many different locations, and strains were chosen from breeding stock that did best in temperature extremes," said Cool Wave plant manager Claire Watson. "Not only are they resistant to cold but they also are more tolerant of heat."

Some other flower varieties introduced recently to provide color over longer periods of time are bearded iris, daylilies, clematis and shrub roses. Many of those perennials bloom repeatedly through the growing season, unlike earlier editions.

Cool Wave's extended flowering petunias have been on the market five years, quickly becoming consumer favorites. Pansies were introduced this year.

"They need less maintenance, have large-size flowers and their colors intensify with the cold," Watson said. "They tolerate several light frosts and simply go dormant after a hard frost. They bloom even in the snow."

Cool Wave series flowers can be mixed with traditional late-season plants like ornamental cabbage and peppers, kale, mums, lavender and millet. They return in spring to complement such early arriving bulb varieties as daffodils, tulips, hyacinth and crocuses. In short, they display well with others.

These are vigorous flowers, capable of spreading 24 to 30 inches. That makes them a vibrant groundcover. It also means that not as many plants are needed per pot or for filling bare spaces in borders or beds. Their extended bloom ability gives gardeners more versatility for flowerbed design. The new pansies and petunias provide three full seasons of bloom when grown in the South. Those planted in the Snowbelt are capable of surviving Zone 5 conditions (-10 to -20 degrees Fahrenheit) and will reappear soon after the snow melts.

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