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 hydrangeas are budding and leafing out. We’ve been having lovely weather but are expecting a hard Frost Friday night. Is there something I can do to protect them and do I need to? Would you recommend deadheading grape lollipop garden phlox before pruning in fall? If so how would you deadhead the plant? Also what are your recommendations on how to prune the plant for the fall? I was given a lovely Vanilla Strawberry Hydrangea and the leaves are turning yellow. I read that watering on top can make that happen. I checked the soil and it’s good and have mixed in some food. What am I doing wrong? How can I get my hydrangea plant to grow larger? Every year the plant died back and new growth are coming from the base when summer arrives. All the branches left from previous are all dead and did not have any new growth, and pruning did not seems to help.