As a gardening and landscaping expert, I can provide you with detailed information regarding when to cut back phlox. It is important to note that the timing of cutting back phlox can vary depending on the species and your specific location. However, there are some general guidelines to follow.
In late autumn, after the stems of large species of phlox have completely withered, they can be cut back. This is typically when the foliage starts turning brown and dying off. However, it is actually better to leave the dead stems intact over the winter and only cut them back in the spring, just before new shoots begin to appear.
By leaving the dead stems in place during winter, they provide valuable shelter for many beneficial insects. Insects such as ladybugs, lacewings, and bees often seek refuge in the hollow stems, helping to support the ecological balance in your garden. Additionally, the dead stems can also provide some protection to the crowns of the phlox plants during harsh winter conditions.
When spring arrives and new growth starts emerging, it is the ideal time to cut back the dead stems of phlox. This is usually around early to mid-spring, depending on your specific climate and the rate of growth in your region. It is important to wait until you see new shoots appearing, as cutting back too early can potentially damage the new growth.
When cutting back the phlox stems, it is recommended to use sharp and clean pruners or shears. Make clean cuts just above the new shoots, leaving a stub of the stem. This will encourage healthy growth and prevent any potential disease or pest issues.
In addition to cutting back the stems, deadheading the flowers of phlox is also a beneficial practice. Deadheading involves removing spent flowers, which not only improves the plant’s appearance but also promotes continued blooming throughout the season. To deadhead phlox, simply pinch or snip off the faded flowers just above a set of leaves or a dormant bud.
To summarize, the best time to cut back phlox is in early spring, just before new shoots start emerging. By leaving the dead stems over the winter, you provide winter shelter for insects and protect the plants. Remember to also deadhead the flowers to encourage continuous blooming. As always, it is important to consider your specific species of phlox and local climate conditions when determining the exact timing for cutting back.
