Green crop field and farm buildings at Wiers Farm, Huron County

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Gardening by county

Ohio Gardening by County

Frost dates, planting zones and planting calendars for all 88 Ohio counties. The last spring frost ranges from Apr 8 (Cuyahoga County) to May 8 (Mahoning County), and USDA zones run from 6a to 7a.

Photo: Green crop field and farm buildings at Wiers Farm, Huron County. Kirk Allen, CC BY 3.0, via Wikimedia Commons

Ohio garden tools

Ohio frost dates

Frost dates by county, with the 10%, 50% and 90% dates.

What to plant now in Ohio

This week’s outdoor planting list, recomputed from today’s date.

Ohio planting calendar

Planting dates for vegetables and herbs from Ohio State University Extension.

Ohio planting zone map

USDA hardiness zones county by county.

Ohio lawn care calendar: lawn tasks by month from Ohio State University Extension publications.

Ohio invasive plants: the state ban list and advisory invasive plant lists.

Ohio native plants: native plants by type, with pollinator plants, from official lists.

Ohio at a county level

Flat green soybean fields under a blue sky near Deshler, Henry County

The 50% growing season is 157 days in Mahoning County and 217 days in Cuyahoga County. On average Knox County gets its first fall frost around Oct 10, while Cuyahoga County gets it around Nov 12.

The Ohio calendar is written for zone 6a; counties in warmer zones plant spring crops 1 to 2 weeks earlier, as the calendar states.

The frost tables rely on 84 NOAA stations, the nearest one to each county. The most common USDA zones are 6b (45 counties), 6a (42 counties), 7a (1 county).

When to plant in Ohio

When to plant tomatoes
When to plant peppers
When to plant potatoes
When to plant sweet potatoes
When to plant sweet corn
When to plant green beans
When to plant lima beans
When to plant peas
When to plant southern peas
When to plant cucumbers
When to plant squash
When to plant winter squash
When to plant pumpkins
When to plant watermelon
When to plant cantaloupe
When to plant okra
When to plant eggplant
When to plant lettuce
When to plant spinach
When to plant collard greens
When to plant mustard greens
When to plant turnips
When to plant swiss chard
When to plant cabbage
When to plant broccoli
When to plant cauliflower
When to plant brussels sprouts
When to plant carrots
When to plant beets
When to plant radishes
When to plant onions
When to plant garlic
When to plant leeks
When to plant asparagus
When to plant rutabagas

Ohio counties

Adams CountyZone 6b, last frost Apr 29
Allen CountyZone 6a, last frost Apr 24
Ashland CountyZone 6a, last frost Apr 30
Ashtabula CountyZone 6a, last frost May 2
Athens CountyZone 6b, last frost Apr 25
Auglaize CountyZone 6a, last frost Apr 24
Belmont CountyZone 6b, last frost Apr 27
Brown CountyZone 6b, last frost Apr 29
Butler CountyZone 6b, last frost Apr 22
Carroll CountyZone 6b, last frost Apr 29
Champaign CountyZone 6a, last frost Apr 24
Clark CountyZone 6a, last frost Apr 25
Clermont CountyZone 6b, last frost Apr 23
Clinton CountyZone 6b, last frost Apr 19
Columbiana CountyZone 6a, last frost May 2
Coshocton CountyZone 6b, last frost Apr 27
Crawford CountyZone 6a, last frost Apr 19
Cuyahoga CountyZone 6b, last frost Apr 8
Darke CountyZone 6a, last frost Apr 21
Defiance CountyZone 6a, last frost Apr 28
Delaware CountyZone 6b, last frost Apr 22
Erie CountyZone 6b, last frost Apr 10
Fairfield CountyZone 6a, last frost Apr 26
Fayette CountyZone 6b, last frost Apr 23
Franklin CountyZone 6b, last frost Apr 20
Fulton CountyZone 6a, last frost Apr 29
Gallia CountyZone 6b, last frost Apr 18
Geauga CountyZone 6a, last frost May 5
Greene CountyZone 6b, last frost Apr 18
Guernsey CountyZone 6b, last frost Apr 28
Hamilton CountyZone 6b, last frost Apr 17
Hancock CountyZone 6a, last frost Apr 19
Hardin CountyZone 6a, last frost Apr 22
Harrison CountyZone 6b, last frost Apr 21
Henry CountyZone 6a, last frost Apr 24
Highland CountyZone 6b, last frost Apr 24
Hocking CountyZone 6b, last frost Apr 30
Holmes CountyZone 6a, last frost May 2
Huron CountyZone 6a, last frost Apr 25
Jackson CountyZone 6b, last frost Apr 22
Jefferson CountyZone 6b, last frost Apr 29
Knox CountyZone 6a, last frost May 1
Lake CountyZone 6b, last frost Apr 15
Lawrence CountyZone 7a, last frost Apr 30
Licking CountyZone 6a, last frost Apr 29
Logan CountyZone 6a, last frost Apr 26
Lorain CountyZone 6b, last frost Apr 24
Lucas CountyZone 6b, last frost Apr 20
Madison CountyZone 6a, last frost Apr 24
Mahoning CountyZone 6a, last frost May 8
Marion CountyZone 6a, last frost Apr 25
Medina CountyZone 6a, last frost Apr 29
Meigs CountyZone 6b, last frost Apr 27
Mercer CountyZone 6a, last frost Apr 27
Miami CountyZone 6a, last frost Apr 18
Monroe CountyZone 6b, last frost Apr 26
Montgomery CountyZone 6b, last frost Apr 18
Morgan CountyZone 6b, last frost Apr 27
Morrow CountyZone 6a, last frost Apr 26
Muskingum CountyZone 6b, last frost Apr 26
Noble CountyZone 6b, last frost Apr 30
Ottawa CountyZone 6b, last frost Apr 26
Paulding CountyZone 6a, last frost Apr 25
Perry CountyZone 6a, last frost Apr 30
Pickaway CountyZone 6b, last frost Apr 17
Pike CountyZone 6b, last frost Apr 21
Portage CountyZone 6a, last frost May 1
Preble CountyZone 6a, last frost Apr 25
Putnam CountyZone 6a, last frost Apr 23
Richland CountyZone 6a, last frost Apr 26
Ross CountyZone 6b, last frost Apr 20
Sandusky CountyZone 6b, last frost Apr 26
Scioto CountyZone 6b, last frost Apr 17
Seneca CountyZone 6a, last frost Apr 23
Shelby CountyZone 6a, last frost Apr 27
Stark CountyZone 6b, last frost Apr 24
Summit CountyZone 6b, last frost Apr 24
Trumbull CountyZone 6a, last frost May 1
Tuscarawas CountyZone 6b, last frost Apr 26
Union CountyZone 6a, last frost Apr 19
Van Wert CountyZone 6a, last frost Apr 21
Vinton CountyZone 6b, last frost Apr 27
Warren CountyZone 6b, last frost Apr 24
Washington CountyZone 6b, last frost Apr 18
Wayne CountyZone 6a, last frost Apr 29
Williams CountyZone 6a, last frost Apr 28
Wood CountyZone 6b, last frost Apr 22
Wyandot CountyZone 6a, last frost Apr 29

Ohio at a glance

88Counties

6a to 7aUSDA zones

35Crops with dates

Ohio State University ExtensionExtension source

When to plant in Ohio: crop by crop

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

Tomatoes

Peppers

Potatoes

Sweet Corn

Green Beans

Cucumbers

Squash

Lettuce

Onions

Garlic

Peas

Watermelon

Pumpkins

Broccoli

Carrots

Okra

Spinach

Cabbage

Sweet Potatoes

Lima Beans

Southern Peas

Winter Squash

Cantaloupe

Eggplant

Collard Greens

Mustard Greens

Turnips

Swiss Chard

Cauliflower

Brussels Sprouts

Beets

Radishes

Leeks

Asparagus

Rutabagas

Ohio gardening questions

When is the last spring frost in Ohio?

Anywhere from Apr 8 to May 8; the frost dates page has every county.

What is the USDA zone for Ohio?

The USDA 2023 map places Ohio in zones 6a to 7a.

What can go in the ground now in Ohio?

Open what to plant now in Ohio and choose a county.

How current is this information?

Frost normals cover 1991 to 2020 (NOAA), zones are the 2023 USDA map, and planting dates follow the current Ohio State University Extension publications.

Harvested stubble field and woodlot near Holgate, Henry County

Photos: Green crop field and farm buildings at Wiers Farm, Huron County: Kirk Allen, CC BY 3.0, via Wikimedia Commons; Harvested stubble field and woodlot near Holgate, Henry County: Nyttend, Public domain, via Wikimedia Commons; Flat green soybean fields under a blue sky near Deshler, Henry County: Nyttend, Public domain, via Wikimedia Commons; Tomato plant with fruit in a garden: MavisLee, CC BY-SA 3.0, 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; Tall corn plants with golden tassels against a summer sky in a field: inkknife_2000, 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 plants growing in a greenhouse bed: HARTLEPOOLMARINA2014, CC BY-SA 4.0, via Wikimedia Commons; Harvested zucchini and summer squash: nociveglia from Appennino Emiliano, Italy, CC BY 2.0, via Wikimedia Commons; Heads of lettuce in a garden bed: Prenn, CC BY-SA 3.0, via Wikimedia Commons; Long rows of green onion plants growing in sandy farm soil: ליזי שאנן, CC BY 2.5, via Wikimedia Commons; Neat rows of young garlic shoots growing in dark tilled soil: Timothy A. Gonsalves, CC BY-SA 4.0, via Wikimedia Commons; Pea vines on a garden trellis with white flowers and flat green pods: Forest and Kim Starr, CC BY 2.0, via Wikimedia Commons; Young watermelon plant in a garden: Forest and Kim Starr, CC BY 3.0 us, via Wikimedia Commons; Harvested pumpkins and squash in a garden: Lolailand, CC BY-SA 4.0, via Wikimedia Commons; Green broccoli head growing in the center of a leafy plant: Pinakpani, CC BY-SA 4.0, via Wikimedia Commons; Rows of carrots growing between rye windbreak strips in a farm field: Photo by Fred Gasper, USDA Natural Resources Conservation Service, Public domain, via Wikimedia Commons; Okra plants in a school vegetable garden: Leonora (Ellie) Enking from East Preston, United Kingdom, CC BY-SA 2.0, via Wikimedia Commons; Close view of a spinach plant with crinkled dark green leaves in soil: Алексей Тараканов, CC BY-SA 2.0, via Wikimedia Commons; Cabbage heads forming among broad outer leaves in a garden plot: SuSanA Secretariat, CC BY 2.0, via Wikimedia Commons; Sweet potato vines covering the ground: Forest and Kim Starr, CC BY 2.0, via Wikimedia Commons; Lima bean seeds: Filo gèn', CC BY-SA 4.0, via Wikimedia Commons; Cowpea plants with long slender green pods growing at the edge of a field: Ganesh Mohan T, CC BY-SA 4.0, via Wikimedia Commons; Butternut squash in the garden: Geo Lightspeed7, CC BY-SA 4.0, via Wikimedia Commons; Cantaloupe vine with flowers: Photo by David J. Stang, CC BY-SA 4.0, via Wikimedia Commons; Glossy dark purple eggplant hanging from a leafy plant in a garden: U.S. Department of Agriculture Lance Cheung/Multimedia PhotoJournalist, Public domain, via Wikimedia Commons; Rows of collard greens growing in a farm field with drip irrigation lines: Jakec, CC BY-SA 3.0, via Wikimedia Commons; Mustard plant (Brassica juncea) in flower: Dr.S.Soundarapandian, Public domain, via Wikimedia Commons; White turnip roots swelling above the soil under leafy green tops: Miya, CC BY-SA 4.0, via Wikimedia Commons; Red-stemmed Swiss chard plants growing in a garden bed with drip line: mercedesfromtheeighties, CC BY-SA 2.0, via Wikimedia Commons; Creamy white cauliflower head growing among large blue-green leaves: Edukeralam,( Navaneeth Krishnan S), CC BY-SA 3.0, via Wikimedia Commons; Field of tall Brussels sprouts plants with sprouts along the stalks: Schlaghecken Josef, CC BY 4.0, via Wikimedia Commons; Red beets growing in a field with some roots pulled and cut open: Arn, CC BY-SA 4.0, via Wikimedia Commons; Red radish root peeking from dark garden soil beneath green leaves: GT1976, CC BY-SA 4.0, via Wikimedia Commons; Bed of blue-green leeks growing in a walled kitchen garden: Photograph by Mike Peel ( www.mikepeel.net )., CC BY-SA 4.0, via Wikimedia Commons; Rows of feathery asparagus ferns in a commercial asparagus field: User:Morri362, CC BY-SA 3.0, via Wikimedia Commons; Freshly pulled rutabaga roots lying in a row on garden soil: Picasa user Seedambassadors, CC BY-SA 3.0, via Wikimedia Commons; Red and green azalea leaves edged with frost crystals on an autumn morning: Famartin, CC BY-SA 4.0, via Wikimedia Commons; Two hands firming soil around a young green seedling just planted in the ground: Robbieross123, CC BY-SA 4.0, via Wikimedia Commons; Wicker basket of ripe red and orange tomatoes among tomato plants: George Chernilevsky, CC BY 4.0, via Wikimedia Commons; Rows of apple trees in white blossom along a grassy orchard alley: Philip Halling, CC BY-SA 2.0, via Wikimedia Commons.