Perennial plants, like action heroes, take a beating and keep on repeating. So they could survive on their own if given a head start on the bad guys weeds. But your neighbors will appreciate you grooming those plants for a less rugged look. How much grooming they require depends on their type. Evergreen ground covers, such as cheddar pinks and creeping phlox, often emerge from winter looking as unconcernedly unscathed as those aforementioned action heroes. So they may not require early pruning, but it’s a good idea to cut them back by about half after they bloom.
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