Creeping Phlox is a perennial grown for its purple blooms, which open in early spring and return year after year. It's hardy across USDA zones 4 through 10, shrugs off deer and grows just as well in a container as in the ground. Its early spring flowers are a real draw for native bees, butterflies, hummingbirds, and moths.
Zones
4-10
pH Range
5.7-8
Sun
Part Sun
Days to Maturity
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What Creeping Phlox is
Creeping Phlox grows as a perennial and reaches around 6 inches at maturity. It blooms purple in early spring. It's also deer-resistant and well suited to containers.
How to grow Creeping Phlox
Creeping Phlox grows in USDA zones 4 through 10. Creeping Phlox does best in part sun — at least 4 hours of direct sun a day — and soil from pH 5.7 to 8, on well-drained ground. It needs a growing season of at least 100 frost-free days, which is why climate matters as much as soil.
USDA Zones
4-10
USDA PHZM 2023
Soil pH
5.7 - 8
USDA PLANTS Database
Sun
Part Sun
plant_species_v5.csv
Drainage
well (dry spells)
plant_species_v5.csv
Frost Tolerance
-33°F
plant_species_v5.csv
Mature Height
0.5 ft
plant_species_v5.csv
Frost-Free Days
100+
plant_species_v5.csv
Start the season right
Plant creeping phlox in part sun with at least 4 hours of direct sun, once the soil has warmed and frost risk has passed.
Match the soil
Creeping Phlox prefers pH 5.7 to 8 (USDA PLANTS Database). A quick soil test from your local Extension lab tells you whether to add lime or sulfur to land in band.
Water steadily
Keep the root zone evenly moist through establishment. A 2–3 inch mulch layer holds moisture without waterlogging.
Harvest at its peak
Cut creeping phlox blooms in the cool of the morning, just as they open, for the longest display.
Good to know
Good news for pet owners — creeping phlox isn't known to be toxic to dogs or cats. (Source: ASPCA.)
Creeping Phlox is a standout pollinator plant — high value to bees and other pollinators. (Source: Xerces Society, Pollinator Partnership.)
Where Creeping Phlox thrives
Creeping Phlox is hardy across USDA zones 4 through 10. Zone is only the starting point, though: the soil pH, drainage, and frost dates on your specific land decide how well it actually does.
Zones 4–10·Where Creeping Phlox growsOpen map →
On USDA hardiness-zone overlap, Creeping Phlox can grow in these states:
See if Creeping Phlox will thrive on your land
Zone averages are a start. Your exact soil pH, drainage, sun exposure, and frost dates shape whether creeping phlox actually takes — we score it against the real conditions at your address.
Three things about your exact spot that zone averages miss:
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Frequently Asked Questions
Can I grow Creeping Phlox in my zone?
Creeping Phlox grows in USDA hardiness zones 4 through 10 (USDA PHZM 2023). Zone is one factor — soil pH, drainage, and frost dates on your specific parcel also shape whether it takes.
When should you plant Creeping Phlox?
Most growers plant creeping phlox after the last spring frost, once the soil has warmed, leaving enough of the season for its 100-day frost-free need. Your local frost dates set the exact window — a Growable Ground report reads them for your address.
How much sun does Creeping Phlox need?
Creeping Phlox does well in partial sun — around 4 hours of direct sun, and it takes some afternoon shade in stride. That flexibility makes it a good match for a bed the house or a nearby tree shades for part of the day. A Growable Ground report maps how the sun actually falls on your land, hour by hour, so you can set it where the light lines up.
What soil does Creeping Phlox need?
Creeping Phlox prefers soil pH 5.7 to 8, on well-drained ground (USDA PLANTS Database). Your report scores your parcel's actual soil against that using USDA SSURGO data.
Does Creeping Phlox attract pollinators?
Yes — creeping phlox's flowers are a strong nectar and pollen source for native bees, butterflies, hummingbirds, and moths (Xerces Society, Pollinator Partnership).
Is Creeping Phlox safe for pets?
Creeping Phlox is not known to be toxic to dogs or cats based on available data (ASPCA). Always supervise pets around new plantings.