Late summer/early fall, specifically mid-August through September, is the ideal time to divide creeping phlox. This is because the plant has finished flowering and the weather is still warm enough for the divisions to establish themselves before winter sets in. Dividing creeping phlox not only helps rejuvenate the plant but also allows you to expand your garden or share the divisions with friends and neighbors.
To start the process, you’ll need to dig up the entire plant. Use a garden fork or shovel to loosen the soil around the base of the phlox clump, being careful not to damage the roots. Gently lift the plant out of the ground, keeping as much soil intact as possible.
Once the plant is out of the ground, you can divide the clump into smaller sections. Look for natural divisions within the plant, such as areas where the stems are separate or where there are distinct clusters of foliage. Use a sharp knife or garden shears to carefully separate these sections, ensuring that each division has a good amount of healthy roots attached.
When replanting the divisions, it’s important to do so immediately to minimize stress on the plants. Choose a well-draining spot in your garden that receives full to partial sunlight. Prepare the soil by loosening it with a garden fork and incorporating some compost or organic matter to improve fertility.
Dig a hole large enough to accommodate the division, making sure the crown of the plant sits at ground level. Place the division in the hole and backfill with soil, gently firming it around the roots. Water the newly planted division thoroughly to help settle the soil and provide moisture for the roots.
It’s a good idea to space the divisions at least 12-18 inches apart to allow for their growth and spread over time. This will also prevent overcrowding and promote good air circulation, reducing the risk of diseases.
After planting, continue to water the divisions regularly, especially during dry spells, to help them establish. Applying a layer of mulch around the plants can also help conserve moisture and suppress weed growth. Avoid overwatering, as this can lead to root rot.
In terms of care, creeping phlox is generally low-maintenance. Regular watering, especially during dry periods, and occasional fertilization with a balanced, slow-release fertilizer in spring should be sufficient. Deadheading the spent flowers can promote continuous blooming and prevent self-seeding.
Dividing creeping phlox in late summer/early fall is a simple and rewarding process that allows you to propagate and rejuvenate this beautiful plant. By following these steps and providing proper care, you can enjoy a healthy and vibrant display of creeping phlox in your garden.
