Woodland Phlox is a perennial grown for its purple blooms, which open in mid summer and return year after year. It's hardy across USDA zones 4 through 10 and shrugs off deer. Its mid summer flowers are a real draw for native bees, butterflies, hummingbirds, and moths.
Zones
4-10
pH Range
5.5-7.2
Sun
Part Sun
Days to Maturity
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Score Woodland Phlox on your exact land.
Zone averages can't see the slope, soil, frost, and sun that decide whether woodland phlox actually takes — and those shift from one yard to the next. Enter your address and we'll score woodland phlox against your land's real conditions.
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What Woodland Phlox is
Woodland Phlox grows as a perennial and reaches around 1.25 feet at maturity. It blooms purple in mid summer. It's also deer-resistant.
How to grow Woodland Phlox
Woodland Phlox grows in USDA zones 4 through 10. Woodland Phlox does best in part sun — at least 4 hours of direct sun a day — and soil from pH 5.5 to 7.2. 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
5.5 - 7.2
USDA PLANTS Database
Sun
Part Sun
plant_species_v5.csv
Drainage
Data pending
plant_species_v5.csv
Frost Tolerance
-33°F
plant_species_v5.csv
Mature Height
1.25 ft
plant_species_v5.csv
Frost-Free Days
100+
plant_species_v5.csv
Start the season right
Plant woodland 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
Woodland Phlox prefers pH 5.5 to 7.2 (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. Match watering to the plant's drainage preference and your local rainfall.
Harvest at its peak
Cut woodland phlox blooms in the cool of the morning, just as they open, for the longest display.
Good to know
Good news for pet owners — woodland phlox isn't known to be toxic to dogs or cats. (Source: ASPCA.)
Woodland Phlox is a standout pollinator plant — high value to bees and other pollinators. (Source: Xerces Society, Pollinator Partnership.)
Where Woodland Phlox thrives
Woodland 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 Woodland Phlox growsOpen map →
On USDA hardiness-zone overlap, Woodland Phlox can grow in these states:
See if Woodland Phlox will thrive on your land
Zone averages are a start. Your exact soil pH, drainage, sun exposure, and frost dates shape whether woodland 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 Woodland Phlox in my zone?
Woodland 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 Woodland Phlox?
Most growers plant woodland 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 Woodland Phlox need?
Woodland 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 Woodland Phlox need?
Woodland Phlox prefers soil pH 5.5 to 7.2 (USDA PLANTS Database). Your report scores your parcel's actual soil against that using USDA SSURGO data.
Does Woodland Phlox attract pollinators?
Yes — woodland phlox's flowers are a strong nectar and pollen source for native bees, butterflies, hummingbirds, and moths (Xerces Society, Pollinator Partnership).
Is Woodland Phlox safe for pets?
Woodland Phlox is not known to be toxic to dogs or cats based on available data (ASPCA). Always supervise pets around new plantings.