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 Where on the endless summer stem do I cut the blooms when I want to use in vases or because the bloom is spent and needs to be removed? I have healthy The Original Endless Summer® hydrangeas, but the blooms are now green. Is there a way to get the color back? Can I leave them In the pot I bought them in? I WOULD LIKE TO RELOCATE A BARBERRY AND A SPIREA SHRUB THIS SEASON. WHEN IS THE BEST TIME TO TRANSPLANT THESE PLANTS? I PLANTED THESE SHRUBS LAST SUMMER (2019).