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 Blushing Bride has so many small flower heads. It may be preventing it from growing large flowers. Should I prune some of the small heads? How many months of the year in moderate temperature Northern CA do The Original and BloomStruck hydrangeas bloom? I purchased 1 Summer Crush which came with lots of old dead sticks. After 3 weeks of planting, I can see some new leaves growing out but very tiny. I just cut al dead sticks, I’m not sure it can grow bigger and bloom in the first year? I just feel it’s not growing. How do I trim to make them bloom more?