Sweet Corn is an annual grown for its fruit, ready to harvest about 80 days after planting. It's hardy across USDA zones 2 through 11 and stands up to deer. As a grass, give it a fresh bed each year — away from where its relatives just grew — so the soil-borne pests and diseases of the family never get a foothold.
Zones
2-11
pH Range
4.5-8.5
Sun
Full Sun
Days to Maturity
80
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What Sweet Corn is
Sweet Corn grows as an annual and reaches around eight feet at maturity. It blooms yellow in early summer. It's also deer-resistant.
How to grow Sweet Corn
Sweet Corn grows in USDA zones 2 through 11 and is ready to harvest about 80 days after planting. Sweet Corn does best in full sun — at least 6 hours of direct sun a day — and soil from pH 4.5 to 8.5. It needs around 2,000 growing degree days to mature and a growing season of at least 65 frost-free days, which is why climate matters as much as soil.
USDA Zones
2-11
USDA PHZM 2023
Soil pH
4.5 - 8.5
USDA PLANTS Database
Sun
Full Sun
plant_species_v5.csv
Drainage
Data pending
plant_species_v5.csv
Frost Tolerance
50°F
plant_species_v5.csv
Days to Maturity
80 days
Sweet corn; succession every 14d for steady harvest.
Cornell; ISU-GDD
GDD Required
2000+
plant_species_v5.csv
Mature Height
8 ft
plant_species_v5.csv
Frost-Free Days
65+
plant_species_v5.csv
Start the season right
Plant sweet corn in full sun with at least 6 hours of direct sun, once the soil has warmed and frost risk has passed.
Match the soil
Sweet Corn prefers pH 4.5 to 8.5 (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 maturity
Sweet Corn is ready about 80 days after planting (Cornell; ISU-GDD). Pick when the fruit is full-colored and parts easily from the stem.
Good to know
Good news for pet owners — sweet corn isn't known to be toxic to dogs or cats. (Source: ASPCA.)
Sweet Corn isn't classified as a notable pollinator plant in our data — pair it with high-value bloomers nearby to feed bees.
Where Sweet Corn thrives
On hardiness alone, sweet corn grows across most of the country — its range (USDA zones 2 through 11) is unusually wide. 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 2–11·Where Sweet Corn growsOpen map →
Continental US shown — Alaska and US Pacific territories sit outside the federal map's polygon dataset.
On USDA hardiness-zone overlap, Sweet Corn can grow in these states:
See if Sweet Corn will thrive on your land
Zone averages are a start. Your exact soil pH, drainage, sun exposure, and frost dates shape whether sweet corn 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 Sweet Corn in my zone?
Sweet Corn grows in USDA hardiness zones 2 through 11 (USDA PHZM 2023). Zone is one factor — soil pH, drainage, and frost dates on your specific parcel also shape whether it takes.
How long does Sweet Corn take to grow?
Sweet Corn is ready to harvest about 80 days after planting (Cornell; ISU-GDD). Your local frost dates and soil temperature move that window earlier or later.
When should you plant Sweet Corn?
Most growers plant sweet corn after the last spring frost, once the soil has warmed, leaving enough of the season for its 65-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 Sweet Corn need?
Sweet Corn 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 Sweet Corn need?
Sweet Corn prefers soil pH 4.5 to 8.5 (USDA PLANTS Database). Your report scores your parcel's actual soil against that using USDA SSURGO data.
Does Sweet Corn attract pollinators?
Sweet Corn isn't classified as a notable pollinator plant in our data. Pairing it with high-value bloomers nearby keeps bees and butterflies fed.
Is Sweet Corn safe for pets?
Sweet Corn is not known to be toxic to dogs or cats based on available data (ASPCA). Always supervise pets around new plantings.