If your phlox plants look bedraggled or you've been dealing with mildew issues year after year, it may be time to pick up your pruners. Pruning phlox of any sort before winter can prevent powdery ...

Wait until fall frost kills tall phlox before pruning to the ground; fall pruning is keeps powdery mildew at bay. Regular deadheading and light trimming encourage bushier growth, extend blooming, and ...