Species

Phlox subulataCreeping Phlox Moss Phlox

20 other cultivars

groundcoverN. America Native

Moss Phlox Fort Hill

Phlox subulata 'Fort Hill'

The Story

Plant Bio

Phlox subulata, commonly known as moss phlox or creeping phlox, is a low-growing perennial with dense mats of needle-like foliage and vibrant, star-shaped flowers in shades of pink, white, or purple that cover the ground in spring.

The Fort Hill cultivar is distinguished by its particularly vigorous spreading habit and abundant, brightly colored flowers that create a striking carpet effect in rock gardens and borders.

Uses & Benefits:

Creates vibrant, low-maintenance ground cover with colorful blooms.

Erosion control and soil stabilization on slopes.

Supports pollinators like bees and butterflies.

SpeciesPhlox subulataCreeping Phlox Moss Phlox

Essentials

At a Glance

Plant Type

Groundcover

Height

3 inches

Width

18 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

Bloom period

Late spring – Early summer

In flower about 2 months of the year

Planting

How to Grow

Tuck seeds into well-drained soil in early spring.
Mist cuttings occasionally to maintain humidity.
Water regularly during first growing season.
Divide plants every 3-4 years for best growth.
Remove spent flowers to encourage rebloom.
Mulch lightly to conserve moisture and suppress weeds.

Pro Tip

Ensure excellent drainage to prevent root rot and promote healthy growth.

Keep It Thriving

Care Guide

Do

Water during dry spells 🌱
Prune after flowering to maintain shape
Apply a balanced fertilizer in spring
Mulch to retain soil moisture

Don't

Overwater, which can cause root rot ❌
Allow soil to become soggy
Plant in heavy clay soil without amendments
Neglect deadheading to prolong bloom

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Divide
Fertilize
Prune

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Pink-flowered groundcover for rock gardensSoft border for pathwaysSilver-foliaged edging

Companion Plants

SedumLavender CoreopsisYarrow Russian Sage

Multiply

Propagation Methods

Good to Know

Common Questions

Moss Phlox Fort Hill questions

What zones can Moss Phlox Fort Hill grow in?

Moss Phlox Fort Hill 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 Moss Phlox Fort Hill deer resistant?

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

When does Moss Phlox Fort Hill bloom?

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

Does Moss Phlox Fort Hill need full sun?

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

Is Moss Phlox Fort Hill drought tolerant?

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