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 HOW DO I KEEP MY HYDRANGEA PINK? Where is the video on the garden gab page on how and when to fertilize my Endless Summer hydrangea? I have a Mandarin Tango potentilla I just purchased. Can Miracle grow be used on it? Several of my new hydrangea bushes appear to be victims of someone either cutting and stealing blooms in the middle of the night, or some kind of animal eating the stems and dropping the flowers. I’ve looked for hoof or paw prints but the mulch is good for concealing any tell tale signs. What’s doing this to my plants and how do I prevent it? It breaks my heart!!!