When Should Plumbago Be Pruned In Florida?
Certified GKH Gardening Expert
Since the the shrub is quite hardy and carefree, you can prune at just about any time! Whenever it gets leggy, or you just want to trim it up some, you can.
This article will give you more information on the care of the shrub: https://www.gardeningknowhow.com/ornamental/shrubs/plumbago/growing-plumbago-plants.htm