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 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. Why do my blooms look burnt? What is the reason my hydrangeas aren’t blooming? I planted 3 Endless Summer (Summer Crush) last summer. However, during the later part of the season there were holes on most of the leaves. I think there are some pest. What should I do to save my hydrangeas and when is the best time to do it?