Phlox subulata
groundcoverN. America Native

Creeping Phlox Moss Phlox

Phlox subulata

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Essentials

At a Glance

Plant Type

Groundcover

Height

6 inches

Width

24 inches

Light

Full Sun, Partial Sun

Zones

4, 5, 6, 7, 8, 9

Water

Moderate, drought-tolerant once established

Humidity

Prefers dry to moderate humidity

Lifespan

Perennial

Native To

Eastern North America

Toxicity

Non-toxic to humans and pets

The Story

Plant Bio

Phlox subulata, commonly known as moss phlox or creeping phlox, is a low-growing perennial that forms a mat-like ground cover, making it ideal for rock gardens or as a border plant. This species is particularly noted for its vibrant spring blooms and ability to spread quickly, making it useful for erosion control.

Bloom Period:

J
F
M
A
M
J
J
A
S
O
N
D
EarlyLate

Uses & Benefits:

Ornamental UsesPhlox subulata offers vibrant, carpet-like blooms that brighten rock gardens and borders, attracting pollinators.
Practical UsesIts dense growth helps prevent soil erosion on slopes and pathways.
Ecological BenefitsProvides nectar for bees and butterflies, supporting local ecosystems.

Marketplace

Where to Buy

<1 Gal PotBarerootTrays
In Stock$8.99

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Planting

How to Grow

  1. Tuck seeds into well-drained soil in early spring for best germination.
  2. Mist cuttings lightly to maintain humidity during propagation.
  3. Transplant seedlings when they are 2-3 inches tall, after the last frost.
  4. Divide mature plants every 3-4 years in early spring or fall.
  5. Mulch around plants to conserve moisture and suppress weeds, especially in summer.
  6. Fertilize with a balanced, slow-release fertilizer in early spring to promote growth.

Pro Tip

Plant in full sun for vibrant blooms and compact growth.

Keep It Thriving

Care Guide

Do

  • Water regularly during dry spells to keep soil moist 🌱
  • Prune after flowering to maintain shape and encourage new growth
  • Apply mulch annually to retain soil moisture and keep roots cool

Don't

  • Avoid overwatering to prevent root rot ❌
  • Don’t fertilize late in the season to prevent weak, leggy growth
  • Refrain from pruning in late fall to protect from winter damage

Seasonal Care Calendar

TaskJanFebMarAprMayJunJulAugSepOctNovDec
Fertilize
Prune

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Vigorous groundcover for rock gardensBorder plant with colorful blooms in perennial bedsErosion control on slopes with its spreading habit

Companion Plants

Sedum Coreopsis Lavender Gaillardia Salvia

Multiply

Propagation Methods

Good to Know

Common Questions

Creeping Phlox Moss Phlox questions

What zones can Creeping Phlox Moss Phlox grow in?

Creeping Phlox Moss Phlox is hardy in USDA Zones 4–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Creeping Phlox Moss Phlox deer resistant?

Yes — Creeping Phlox Moss Phlox is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.

When does Creeping Phlox Moss Phlox bloom?

Creeping Phlox Moss Phlox typically blooms in early spring through late spring. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Creeping Phlox Moss Phlox need full sun?

Creeping Phlox Moss Phlox does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.

Is Creeping Phlox Moss Phlox drought tolerant?

Yes — once established (usually after the first full season), Creeping Phlox Moss Phlox handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.

Keep exploring

Grow Creeping Phlox Moss Phlox with confidence

See it in a design of your actual yard, get zone-matched care reminders, and track it season by season in your garden journal.

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