Creeping phlox (Phlox subulata) is a durable, mat-forming perennial known for its dense, needle-like foliage and spectacular spring bloom. This low-growing plant is highly valued as a groundcover, providing a cascade of color over rock walls or along borders. When an established patch needs to be moved or divided, a sequential approach is necessary to minimize stress and ensure the plant successfully re-establishes itself. Following a structured guide for relocation maximizes the chances of a thriving, colorful display.
Determining the Optimal Timing and Location
The best time to relocate creeping phlox is during periods of moderate temperature, allowing the plant to focus energy on root recovery rather than managing heat stress. Early spring is ideal, before the heavy flowering cycle begins, or in the early fall. Fall transplanting must be completed at least six weeks before the first hard frost, giving the roots adequate time to settle before the ground freezes.
The new planting site should closely match the plant’s preferences for sunlight and soil composition. Creeping phlox thrives in full sun, requiring at least six hours of direct sunlight daily, though it can tolerate partial shade in regions with intense summer heat. The soil is equally important, requiring excellent drainage to prevent root rot, as the plant does not tolerate standing water.
To prepare the new home, dig a hole approximately two times wider than the current root ball. This width gives the roots ample space to spread into loosened soil once replanted. The depth of the hole should be no deeper than the height of the root ball, ensuring the plant’s crown sits level with the surrounding soil surface.
Executing the Digging and Moving Steps
Preparation begins the day before the move by thoroughly watering the existing creeping phlox plant. A deep watering 12 to 24 hours prior ensures the root ball is saturated, which helps the soil cling to the roots and reduces the risk of transplant shock. This pre-hydration supports the plant through the disruption.
To extract the plant, first use a sharp spade to define the perimeter of the root ball you intend to move. For an established plant, the circumference should be 8 to 12 inches wide, depending on the patch size. Drive the spade cleanly into the ground around the perimeter, severing the roots to create a distinct, manageable section.
Once the circle is cut, work the spade underneath the root ball to gently leverage and lift the entire mass from the ground. The goal is to keep the soil and root system intact to minimize root disturbance. For larger sections, immediately slide a piece of burlap or a small tarp underneath the root ball to provide support during transport.
Move the phlox directly to the prepared new hole without delay to prevent the roots from drying out. Center the root ball in the hole, ensuring the top of the root ball is flush with the surrounding grade. Backfill the space around the roots with the excavated soil, gently firming it to eliminate air pockets that could dry out the root hairs.
Essential Post-Transplant Care
Immediately after settling the plant in its new location, provide a deep, thorough watering. This initial soaking helps the backfilled soil settle completely around the root system, which is crucial for establishing good soil-to-root contact and mitigating transplant shock.
For the first few weeks following the move, maintaining consistent soil moisture is imperative for root recovery. Keep the soil constantly moist but avoid overwatering, which could lead to soggy conditions and root rot. A weekly check of the soil moisture should guide subsequent watering, adjusting based on rainfall and temperature.
During the establishment period, avoid applying fertilizer, as this encourages top growth at the expense of root development. The plant needs to prioritize regenerating its root system before supporting new foliage and blooms, so hold off on feeding until the following growing season. Monitor the phlox closely for signs of stress, such as wilting or browning leaves, and provide temporary light shade if the plant is exposed to intense afternoon sun during its initial week of recovery.