Should garden phlox be deadheaded?
Deadheading is the removal of spent or faded flowers. There are several benefits to deadheading garden phlox. Deadheading improves the appearance of plants, may encourage a second flush of bloom, and prevents self-seeding. (Garden phlox freely reseeds itself. However, most cultivars do not come from seeds. Seedlings are usually inferior plants. Large numbers can become weedy.)