Phlox, with its vibrant, long-lasting flowers, is a favorite among gardeners. Its ability to attract butterflies, hummingbirds, and other pollinators makes it a valuable addition to any garden. However, after a few years, you might notice your phlox plants not blooming as magnificently as they once did. This could be a sign that they need to be divided. Here’s how you can propagate your phlox plants through division.
When to Divide Phlox
Phlox, like many perennials, needs to be divided every few years. This helps control their growth, rejuvenate them, and create more plants for other garden spots. As a general rule, phlox plant division can be done every two to four years in spring or fall.
Signs that your phlox plants need dividing include fewer or no blooms, sparse foliage, or a donut-shaped growth pattern where the plant grows circularly around a dead patch in the middle. Avoid dividing on hot, sunny days. If dividing in spring, do it just as the new shoots appear. If dividing in fall, ensure it’s done at least four to six weeks before the first expected frost date for your location, and mulch the divided plants well before winter sets in.
How to Divide Phlox
Before dividing your phlox plants, water them deeply and thoroughly about 24 hours in advance. Prepare the site for the divisions by loosening up the soil and adding any required amendments.
To divide phlox, cut around the root ball with a sharp spade, then gently lift the plant out from the ground. Remove excess dirt from the roots. Separate the roots into sections with three or more shoots and adequate roots with a sharp, clean knife. Plant these new divisions immediately and water them thoroughly. Watering with a rooting fertilizer can help reduce stress for the plants and encourage quick rooting.
Phlox plant divisions should be planted immediately, but they can be planted in pots with potting mix temporarily if you plan to give them to friends and neighbors.
In conclusion, propagating phlox through division is a simple and effective way to multiply the beauty of your garden. With a little effort and care, you can enjoy the vibrant blooms of phlox for years to come.
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