P
Pulse Beacon

How do you plant a woodland phlox

Author

William Harris

Published Apr 02, 2026

Grow woodland phlox in shade or partial shade in moist, but well-drained soil that’s rich in organic matter, such as compost. Once established, woodland phlox will tolerate periods of drought, but performs best if kept evenly moist. It spreads slowly to form clumps of color in the early spring.

What is the best way to plant phlox?

Plant phlox in the spring—after the threat of frost has passed—and space the plants 1 to 2 feet apart. If you are moving a plant from a pot, dig a hole about twice the size of the pot’s diameter and place the plant so that the top of the root ball is even with the soil’s surface.

What month do you plant phlox?

Plant phlox in spring or autumn, while the soil is warm and moist. Phlox don’t do well on dry, well drained soils, such as sandy soil, so improve with organic matter, such as garden compost or well-rotted manure, before planting and then mulch afterwards, too.

Does woodland phlox come back every year?

Woodland phlox (Phlox divaricata) is a perennial that can be seen in dappled woodland or meadows from Quebec to Florida and west to Texas.

Where should phlox be planted?

  • Light: Both varieties of phlox enjoy full sun, although the upright Garden phlox can take a little afternoon shade, particularly in the south.
  • Soil: Phlox is tolerant of most garden soils, but well-drained soil is preferable, particularly in northern areas where spring snow is slow to drain.

How quickly does phlox spread?

Like other ground covers,creeping phlox takes a few years to reach maturity — about two years on average, according to the North Carolina State University Cooperative Extension. This means it grows an average of about an inch per month.

What can I plant with woodland phlox?

  • Hellebore. Brighten your spring garden by teaming Woodland Phlox and Hellebore.
  • Hosta. Hosta and Woodland Phlox are a good choice for shady borders.
  • Astilbe. Shade loving Astilbe and Woodland Phlox are a wonderful pair in a woodland setting.

Does woodland phlox bloom all summer?

Woodland phlox should be planted in the spring so it has time to spread (it won’t grow as quickly as creeping phlox) and produce fragrant flowers that bloom in clusters during April and May.

Do you deadhead woodland phlox?

Phlox will reseed itself so there need never be a year without these lovely flowers. Deadheading phlox blooms will prevent much of that reseeding. … Some gardeners deadhead phlox flowers to confine the spread of the plant. Since phlox is a perennial, the resulting seedlings can become weedy and often do not bloom.

How do you prune a woodland phlox?

Prune after flowering if desired to tidy the plant’s appearance but wait until spring to clean up the clump, only removing winter-damaged foliage. This plant has few pest problems, other than powdery mildew.

Article first time published on

Do you pinch phlox?

Pinch back late-season flowering perennials, such as phlox, asters, Helen’s flower, Joe Pye, and Russian sage, now for shorter and fuller plants. Extend the bloom time by pinching half of them, because the pinched ones will bloom a few weeks later than the unpinched ones. Remove the top one-third of shoots.

When should I cut down phlox?

Trim back the spent flower heads and overgrown stems once the flowering cycle is complete in early summer. You can prune up until late summer, but the foliage grows lusher and the plants look less unkempt if they are pruned immediately after blooming.

Can you divide creeping phlox?

Creeping phlox clumps should be split on a cool, cloudy day. They should be lifted by pushing the tip of a shovel or garden fork into the soil 4 to 6 inches away from the plant on all sides then lifting the entire clump with the shovel tip or garden fork.

How do you spread phlox?

Creeping Phlox Propagation Simply dig the plant up, preserving the root ball. Cut through the center of the plant and through the roots with a sharp soil knife or even a spade. Replant one-half of the phlox in the original hole and plant the other anywhere you want more of the colorful ground cover.

What is the best fertilizer for phlox?

This will encourage healthy new growth and lots of flowers. You can feed your phlox with a general purpose garden fertilizer such as a 10-10-10 or use a foliar spray such as Miracle Gro.

How do you care for phlox?

  1. Keep soil moist by watering thoroughly on a regular basis.
  2. Water the soil rather than phlox foliage to aid in disease prevention.
  3. If you must water overhead, water early in the morning so plants will dry rapidly in the sun.

Is woodland phlox poisonous to dogs?

Phlox, a flowering plant in the Polemoniaceae family, is not dangerous to dogs or cats. This evergreen perennial isn’t toxic, so even if your pet nibbles on the leaves or flowers, no harm should ensue.

Is woodland phlox ephemeral?

FIRST IMPRESSIONS: Phlox divaricata is a lovely spring ephemeral wildflower that forms foot tall clumps. This species is indigenous to rich deciduous woodlands, open moist to slightly dry woods, seasonal floodplains, stream banks and open areas near woodland paths. … Plants are hardy from USDA Zones 3-8.

Is woodland phlox evergreen?

Native to eastern North America, Phlox divaricata (Woodland Phlox) is a semi-evergreen, spreading wildflower which creates mats of abundant, open clusters of slightly fragrant flowers in mid to late spring. … A creeping perennial, Phlox divaricata grows only 9-12 in.

Why are my phlox not blooming?

Some possible reasons they don’t bloom include: Not enough sun. They need at least 6 hours of full sun. Powdery mildew weakening the plant.

Should phlox be cut back in the fall?

Phlox (Phlox paniculata) Phlox is prone to powdery mildew, and even the resistant varieties can become infected in bad weather. 9 If so, prune and destroy all foliage and stems in the fall. Even if the plant is healthy, it will benefit from some thinning to increase airflow and prevent disease.

How do you take care of phlox in the winter?

If you live in a colder region, you can protect the phlox roots with a layer of mulch, but be sure to do this before the ground freezes. However, you can also prune phlox for winter by cutting them back once the flowers have faded. Prune in the late summer through the fall to avoid reseeding.

Should I cut back phlox with powdery mildew?

Healthy phlox plants can be cut back by half after the flowers fade from late summer to fall to prevent reseeding. … Phlox is prone to the disease powdery mildew, which disfigures the plants from the bottom up, covering them in a whitish powder. Cut infected plants back to the ground for winter with pruning shears.

Do rabbits eat woodland phlox?

Rabbits love Crocuses. In our garden, they also have a particular fondness for Tulips and Phlox, especially Woodland Phlox (Phlox divaritica). They also like certain ornamental grasses, like Japanese Forest Grass (Hakonechloa).

Why are my garden phlox leaves turning yellow?

Yellowing and dieback on the lower leaves of tall garden phlox can usually be attributed to one of three things: drought stress, powdery mildew, plant density, or lack of soil nutrients. … If your phlox are growing in dense clumps, it may be that the lower leaves are not receiving enough sunlight.

How often do you water creeping phlox?

PLANT HEIGHT AND WIDTH These grow about 6 inches tall and 24 to 36 inches wide. WATER Water upon planting and once a week all summer long. These are extremely tolerant of drought once established however. They are great for xeriscaping.

Can phlox survive frost?

Creeping phlox plants are not as sensitive to frost as many other plants, but temperatures of 20 degrees Fahrenheit for a few nights after a period of warm spring weather will damage them and temperatures below 40 F should prompt protective measures. … Fall frost is not a problem for creeping phlox plants.

Do phlox make good cut flowers?

Garden phlox makes a great addition to a cutting garden, and Volcano Phlox is no exception. This fragrant phlox continues to flower all summer long if you cut plants back by a quarter after the first flowers fade.

Why are my phlox dying?

Roots die as a result of over-watering. The garden phlox becomes more susceptible to infections and pest infestations; plants may collapse and die. To control wilting due to improper watering, simply scale back or water more often so soil remains moist without drying out completely or becoming excessively saturated.

What do you do with phlox after it blooms?

The leggy stems of Phlox subulata should be pruned in late spring after the blooms have faded. After flowering, remove dead stems from your creeping moss phlox, according to Mississippi State University Extension. Carefully prune any stems sticking out above the plant to even out the plant.

Should I cut down phlox for winter?

Phlox in winter Perennial phlox will grow back year after year but it is best, right after the first frost spells, to cut the foliage short. It would quickly turn black if left on the plant. Protect with a fair layer of dead leaf mulch.