
Nikki
Certified GKH Gardening Expert
Certified GKH Gardening Expert
Answered on July 10, 2012
You can go ahead and cut them back anytime after flowering has stopped. Deadheading them may even promote additional flowering. Here is more information: https://www.gardeningknowhow.com/ornamental/flowers/fgen/deadheading-flowers.htm
https://www.gardeningknowhow.com/ornamental/flowers/phlox/growing-garden-phlox.htm
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