Water the creeping phlox plants to be divided one or two days before lifting them from the ground.
Loosen the soil at the new planting site 6 inches deep with a garden fork.
Mix 2 to 3 inches of organic compost with the soil of the new planting site. This adds nutrients and improves drainage.
Dig around the creeping phlox with a sharp spade, beginning about 4 inches from its base.
Work the spade under the clump gradually, until it can be lifted from the ground without pulling.
Shake the clump gently to remove excess soil and dead foliage.
Cut the clump apart with a sharp knife. Discard any woody, unproductive portions.
Replant the divided creeping phlox at its previous depth and water until the soil is moist at root level.