Coneflower is a perennial grown for its purple blooms, which open in early summer and return year after year. It's hardy across USDA zones 3 through 8 and shrugs off deer. Its early summer flowers are a real draw for honeybees, native bees, and butterflies.
Zones
3-8
pH Range
5.5-8
Sun
Full Sun
Days to Maturity
120
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What Coneflower is
Coneflower grows as a perennial and reaches around three feet at maturity. It blooms purple in early summer. It's also deer-resistant.
How to grow Coneflower
Coneflower grows in USDA zones 3 through 8. Coneflower does best in full sun — at least 6 hours of direct sun a day — and soil from pH 5.5 to 8, on well-drained ground. It needs around 2,200 growing degree days to mature, which is why climate matters as much as soil.
USDA Zones
3-8
USDA PHZM 2023
Soil pH
5.5 - 8
USDA PLANTS Database
Sun
Full Sun
plant_species_v5.csv
Drainage
well (dry spells)
plant_species_v5.csv
Frost Tolerance
50°F
plant_species_v5.csv
Days to Maturity
120 days
Purple coneflower; cold strat 30-60d.
PrairieMoon; USDA-NRCS
GDD Required
2200+
plant_species_v5.csv
Mature Height
3 ft
plant_species_v5.csv
Frost-Free Days
0+
plant_species_v5.csv
Start the season right
Plant coneflower in full sun with at least 6 hours of direct sun, once the soil has warmed and frost risk has passed.
Match the soil
Coneflower prefers pH 5.5 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 coneflower blooms in the cool of the morning, just as they open, for the longest display.
Good to know
Good news for pet owners — coneflower isn't known to be toxic to dogs or cats. (Source: ASPCA.)
Coneflower is a standout pollinator plant — high value to bees and other pollinators. (Source: Xerces Society, Pollinator Partnership.)
Where Coneflower thrives
Coneflower is hardy across USDA zones 3 through 8. 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 3–8·Where Coneflower growsOpen map →
On USDA hardiness-zone overlap, Coneflower can grow in these states:
See if Coneflower will thrive on your land
Zone averages are a start. Your exact soil pH, drainage, sun exposure, and frost dates shape whether coneflower actually takes — we score it against the real conditions at your address.
Three things about your exact spot that zone averages miss:
We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.
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Frequently Asked Questions
Can I grow Coneflower in my zone?
Coneflower grows in USDA hardiness zones 3 through 8 (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 Coneflower?
Most growers plant coneflower after the last spring frost, once the soil has warmed. Your local frost dates set the exact window — a Growable Ground report reads them for your address.
How much sun does Coneflower need?
Coneflower needs full sun — a spot that catches at least 6 hours of direct summer sun a day. In more shade it still grows, but usually gives a smaller, later crop. The catch is that a yard rarely gets even light everywhere — a fence, the house, or one tall tree can quietly take those hours. A Growable Ground report reads the real sun-hours across your land, canopy and buildings included, so you can pick the brightest bed before you plant.
What soil does Coneflower need?
Coneflower prefers soil pH 5.5 to 8, on well-drained ground (USDA PLANTS Database). Your report scores your parcel's actual soil against that using USDA SSURGO data.
Does Coneflower attract pollinators?
Yes — coneflower's flowers are a strong nectar and pollen source for honeybees, native bees, and butterflies (Xerces Society, Pollinator Partnership).
Is Coneflower safe for pets?
Coneflower is not known to be toxic to dogs or cats based on available data (ASPCA). Always supervise pets around new plantings.