Guide to Planting and Caring for Phlox

Guide to Planting and Caring for Phlox
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Guide to Planting and Caring for Phlox

Caring for Paniculata and Creeping Phlox

As an experienced horticulturist, there's nothing quite like the joy of watching phlox plants (subulata, divaricata, paniculata) burst into bloom in your garden. These vibrant and versatile flowers offer a spectrum of colors and textures, from the low-growing carpets of Phlox subulata to the elegant clusters of Phlox paniculata. Whether you're a seasoned gardener or just starting out, here's everything you need to know to grow and care for these delightful plants.

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Choosing the Right Phlox Plants

Before you start planting, consider the specific characteristics of each type of phlox:

  • Phlox subulata (Creeping Phlox): Ideal for ground cover, these low-growing plants create stunning carpets of color. They thrive in sunny locations with well-draining soil.
  • Phlox divaricata (Woodland Phlox): Perfect for shady or partially shaded areas, these woodland natives offer delicate, fragrant blooms. They prefer rich, moist soil and dappled sunlight.
  • Phlox paniculata (Garden Phlox): Known for their large, showy flower clusters, these plants are excellent for borders and cutting gardens. They do best in full sun to partial shade with well-draining soil.

When selecting phlox plants for your garden, choose healthy specimens with sturdy stems and vibrant foliage. Consider the mature size of the plant to ensure it has enough space to thrive.

Planting Phlox Plants

Soil Preparation

Before planting, prepare the soil by incorporating organic matter such as compost or aged manure. Phlox plants prefer well-draining soil with a slightly acidic to neutral pH.

Sunlight Requirements

For Phlox subulata and Phlox paniculata, choose a location that receives full sun to promote abundant flowering. Phlox divaricata, on the other hand, thrives in partial shade.


Space your phlox plants according to their mature size. Generally, aim for 12 to 18 inches apart for Phlox subulata and Phlox paniculata, and slightly closer for Phlox divaricata.

Planting Depth

Dig a hole slightly larger than the plant's root ball and place the phlox at the same depth as it was in its container. Backfill the hole with soil and water thoroughly.

Growing Phlox Plants (Subulata, Divaricata, Paniculata)


Provide regular watering, especially during dry spells, to keep the soil consistently moist but not waterlogged. Avoid overhead watering to prevent fungal diseases, especially with Phlox divaricata.


Feed your phlox plants with a balanced fertilizer in early spring, following package instructions. A second application after flowering can encourage healthy growth.


Apply a layer of organic mulch around the base of the plants to retain moisture, suppress weeds, and insulate the roots.

Support for Tall Varieties

For taller varieties like Phlox paniculata, use stakes or rings to support the stems and prevent flopping.


To prolong blooming, deadhead spent flowers regularly. This encourages the plant to produce more blooms and keeps the garden looking tidy.


Every few years, divide overcrowded clumps of Phlox subulata and Phlox paniculata in early spring or late summer to rejuvenate the plants.

Pest and Disease Management

Common Pests

Watch out for aphids, spider mites, and powdery mildew. Use insecticidal soap for pests and fungicides for fungal issues, following label instructions.

Good Air Circulation

Proper spacing and pruning help promote good air circulation, reducing the risk of fungal diseases.

Enjoying the Blooms

With proper care, your phlox plants (subulata, divaricata, paniculata) will reward you with a spectacular display of color from spring to fall. These versatile plants are not only beautiful in the garden but also make excellent cut flowers for bouquets and arrangements.

So, whether you're creating a vibrant ground cover with Phlox subulata, adding fragrance to a shady corner with Phlox divaricata, or making a bold statement with Phlox paniculata, these plants are sure to become favorites in your garden. Grow phlox plants (subulata, divaricata, paniculata) and experience the joy of their stunning blooms year after year.

Now that you're equipped with the knowledge to grow and care for phlox plants, it's time to get your hands dirty and create a garden masterpiece!

For more gardening tips and a wide selection of phlox plants, visit Wayside Garden today!