Phlox Flower Blooming Season. Both benefit from pruning once their flowering cycles complete. Growing hardy garden phlox is simple and so is its general care.
While a few varieties can bloom into September most tall phlox blooms in July and August. When mature creeping phlox is between 4 and 6 inches tall depending on the specie. As its two common names suggest it prefers partial to full shade and moist rich soils and produces bluish flowers in early spring.
25042019 Woodland phlox or Blue phlox Phlox divaricata is another low-growing species.
Astoria and Intensia phlox bloom beautifully into late fall and through winter in very cold climates. Removing phlox flowers actually encourages another bloom. Blooming and pruning times differ between the two varieties and some types may require multiple trims because they flower more than once. Both benefit from pruning once their flowering cycles complete.