Question WHEN IS THE BEST TIME TO PLANT CREEPING PHLOX? Answer Creeping phlox is a tough plant! You can plant it either spring or fall. If you plant it now, you will be able to enjoy it early spring when it flowers. Tags: CareDesignFAQProjects Related Questions MY TIGER EYES SUMAC STARTED TO SHOW NEW GROWTH BUT HAS NOW DIED OFF. WHAT SHOULD I DO? IS LITTLE DEVIL NINEBARK DEER RESISTANT? My endless summer hydrangeas does not have any buds on it. What is wrong with it? HOW MANY FEET AWAY FROM OUR HOUSE SHOULD WE PLANT THE ENDLESS SUMMER HYDRANGEAS?