Home › Ohio
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 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
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
When to plant in Ohio: crop by crop
Planting dates for each crop in Ohio, from the Ohio State University Extension calendar.
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
RutabagasOhio 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.
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.