When to Plant Sweet Corn in Ohio

For sweet corn in Ohio, spring planting starts between Apr 17 (Lawrence County) and May 1 (Allen County), according to Ohio State University Extension.

Photo: Rows of sweet corn in a field. Wee Hong, CC BY-SA 4.0, via Wikimedia Commons

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Planting dates for sweet corn in your county

County

The calendar is written for zone 6a; spring dates move 1 week earlier in 6b and 2 weeks earlier in 7a.

Tall corn plants with golden tassels against a summer sky in a field

Weathered wooden barn on a mown lot in Washington Court House, Fayette County

Red barns at the Armstrong Farm near Upper Sandusky, Wyandot County

Published dates for sweet corn in Ohio

Type	Season	Region	Published dates	Source
Sweet Corn	spring	Ohio (dates based on Zone 6a)	May: Sweet Corn; June: Sweet Corn; July: Sweet Corn (90d); August: 'Before August 20' Sweet Corn (60d)	Ohio Gardening Calendar, p. 1, monthly 'Garden Planting' panels

Planting dates for sweet corn by Ohio county

County	Spring	Summer and fall
Adams	Apr 24 to Aug 13	n/a
Allen	May 1 to Aug 20	n/a
Ashland	May 1 to Aug 20	n/a
Ashtabula	May 1 to Aug 20	n/a
Athens	Apr 24 to Aug 13	n/a
Auglaize	May 1 to Aug 20	n/a
Belmont	Apr 24 to Aug 13	n/a
Brown	Apr 24 to Aug 13	n/a
Butler	Apr 24 to Aug 13	n/a
Carroll	Apr 24 to Aug 13	n/a
Champaign	May 1 to Aug 20	n/a
Clark	May 1 to Aug 20	n/a
Clermont	Apr 24 to Aug 13	n/a
Clinton	Apr 24 to Aug 13	n/a
Columbiana	May 1 to Aug 20	n/a
Coshocton	Apr 24 to Aug 13	n/a
Crawford	May 1 to Aug 20	n/a
Cuyahoga	Apr 24 to Aug 13	n/a
Darke	May 1 to Aug 20	n/a
Defiance	May 1 to Aug 20	n/a
Delaware	Apr 24 to Aug 13	n/a
Erie	Apr 24 to Aug 13	n/a
Fairfield	May 1 to Aug 20	n/a
Fayette	Apr 24 to Aug 13	n/a
Franklin	Apr 24 to Aug 13	n/a
Fulton	May 1 to Aug 20	n/a
Gallia	Apr 24 to Aug 13	n/a
Geauga	May 1 to Aug 20	n/a
Greene	Apr 24 to Aug 13	n/a
Guernsey	Apr 24 to Aug 13	n/a
Hamilton	Apr 24 to Aug 13	n/a
Hancock	May 1 to Aug 20	n/a
Hardin	May 1 to Aug 20	n/a
Harrison	Apr 24 to Aug 13	n/a
Henry	May 1 to Aug 20	n/a
Highland	Apr 24 to Aug 13	n/a
Hocking	Apr 24 to Aug 13	n/a
Holmes	May 1 to Aug 20	n/a
Huron	May 1 to Aug 20	n/a
Jackson	Apr 24 to Aug 13	n/a
Jefferson	Apr 24 to Aug 13	n/a
Knox	May 1 to Aug 20	n/a
Lake	Apr 24 to Aug 13	n/a
Lawrence	Apr 17 to Aug 6	n/a
Licking	May 1 to Aug 20	n/a
Logan	May 1 to Aug 20	n/a
Lorain	Apr 24 to Aug 13	n/a
Lucas	Apr 24 to Aug 13	n/a
Madison	May 1 to Aug 20	n/a
Mahoning	May 1 to Aug 20	n/a
Marion	May 1 to Aug 20	n/a
Medina	May 1 to Aug 20	n/a
Meigs	Apr 24 to Aug 13	n/a
Mercer	May 1 to Aug 20	n/a
Miami	May 1 to Aug 20	n/a
Monroe	Apr 24 to Aug 13	n/a
Montgomery	Apr 24 to Aug 13	n/a
Morgan	Apr 24 to Aug 13	n/a
Morrow	May 1 to Aug 20	n/a
Muskingum	Apr 24 to Aug 13	n/a
Noble	Apr 24 to Aug 13	n/a
Ottawa	Apr 24 to Aug 13	n/a
Paulding	May 1 to Aug 20	n/a
Perry	May 1 to Aug 20	n/a
Pickaway	Apr 24 to Aug 13	n/a
Pike	Apr 24 to Aug 13	n/a
Portage	May 1 to Aug 20	n/a
Preble	May 1 to Aug 20	n/a
Putnam	May 1 to Aug 20	n/a
Richland	May 1 to Aug 20	n/a
Ross	Apr 24 to Aug 13	n/a
Sandusky	Apr 24 to Aug 13	n/a
Scioto	Apr 24 to Aug 13	n/a
Seneca	May 1 to Aug 20	n/a
Shelby	May 1 to Aug 20	n/a
Stark	Apr 24 to Aug 13	n/a
Summit	Apr 24 to Aug 13	n/a
Trumbull	May 1 to Aug 20	n/a
Tuscarawas	Apr 24 to Aug 13	n/a
Union	May 1 to Aug 20	n/a
Van Wert	May 1 to Aug 20	n/a
Vinton	Apr 24 to Aug 13	n/a
Warren	Apr 24 to Aug 13	n/a
Washington	Apr 24 to Aug 13	n/a
Wayne	May 1 to Aug 20	n/a
Williams	May 1 to Aug 20	n/a
Wood	Apr 24 to Aug 13	n/a
Wyandot	May 1 to Aug 20	n/a

More Ohio planting dates

Tomatoes
Peppers
Potatoes
Sweet Potatoes
Green Beans
Lima Beans
Peas
Southern Peas
Cucumbers
Squash
Winter Squash
Pumpkins
Watermelon
Cantaloupe
Okra
Eggplant
Lettuce
Spinach
Collard Greens
Mustard Greens
Turnips
Swiss Chard
Cabbage
Broccoli
Cauliflower
Brussels Sprouts
Carrots
Beets
Radishes
Onions
Garlic
Leeks
Asparagus
Rutabagas

More planting dates for Ohio

Planting dates for each crop in Ohio, from the Ohio State University Extension calendar.

Tomatoes

Peppers

Potatoes

Green Beans

Cucumbers

Squash

Lettuce

Onions

Planting sweet corn in Ohio: questions

When do you plant sweet corn in Ohio?

For sweet corn in Ohio, spring planting starts between Apr 17 (Lawrence County) and May 1 (Allen County), according to Ohio State University Extension.

Can I plant sweet corn in the fall in Ohio?

The Ohio State University Extension calendar used here lists no fall window for sweet corn.

How close to frost can I plant sweet corn?

Use your county’s 10% last frost date on the Ohio frost dates page for a safe margin.

Where do these dates for sweet corn come from?

Ohio Gardening Calendar.

How are the county dates set?

The zone of each county sets how early its spring dates are.

Photos: Rows of sweet corn in a field: Wee Hong, CC BY-SA 4.0, via Wikimedia Commons; Field of sweet corn in summer: Marathon, CC BY-SA 2.0, via Wikimedia Commons; Tall corn plants with golden tassels against a summer sky in a field: inkknife_2000, CC BY-SA 2.0, via Wikimedia Commons; Weathered wooden barn on a mown lot in Washington Court House, Fayette County: Pam Broviak, CC0 1.0, via Flickr; Red barns at the Armstrong Farm near Upper Sandusky, Wyandot County: Nyttend, Public domain, via Wikimedia Commons; Pile of ripe tomatoes: Jubair Bin Iqbal, CC BY-SA 4.0, via Wikimedia Commons; Pepper plant in a kitchen garden loaded with green, yellow and red peppers: NPS, Public domain, via Wikimedia Commons; Long neat rows of green potato plants stretching across a farm field: Malcolm Neal, CC BY-SA 2.0, via Wikimedia Commons; Clusters of long green bean pods hanging from a climbing bean vine: Nirajan_pant, CC BY-SA 3.0, via Wikimedia Commons; Cucumber vines climbing a wooden trellis in a kitchen garden: NPS, Public domain, via Wikimedia Commons; Harvested zucchini and summer squash: nociveglia from Appennino Emiliano, Italy, CC BY 2.0, via Wikimedia Commons; Young lettuce plant in garden soil: GT1976, CC BY-SA 4.0, via Wikimedia Commons; Long rows of green onion plants growing in sandy farm soil: ליזי שאנן, CC BY 2.5, via Wikimedia Commons.