North Central Ohio from Ashland to Tiffin has two different USDA Planting Zones 6a and 6b, as declared by USDA update in 2023. Winter temperatures here range from -10°F to 0°F (-23.3°C to -17.8°C).
The coldest zone here is USDA zone 6a (-10°F to -5°F / -23.3°C to -20.6°C) which covers most of the region including Ashland, Bucyrus, Crestline, Galion, Mansfield, and Shelby.
The warmest zone is USDA zone 6b (-5°F to 0°F / -20.6°C to -17.8°C) here which includes parts of Tiffin and Wellington.
Some areas here span multiple USDA zones like Tiffin (6a-6b) and Wellington (6a-6b). Locate your North Central Ohio city or town USDA Planting Zone using our interactive map and Hardiness zones table given below.
USDA Zones Map North Central Ohio
Type or select your North Central Ohio city or town in selection box below, to get its USDA planting zone info.
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USDA Planting Zone
This zone’s data comes from the United States Department of Agriculture (USDA), with the most recent zone updates released in 2023
Planting Zones
Planting Zones
USDA Hardniess Zones Table- North Central Ohio
The table below lists all the Cities and Towns in North Central Ohio along with there USDA Hardiness zones.
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What are the 2 USDA Planting Zones in North Central Ohio?
North Central Ohio from Ashland to Tiffin has two different USDA Planting Zones 6a and 6b.
1. Zone 6a in Ashland
Ashland occupies USDA planting zone 6a, experiencing winter minimums of -10°F to -5°F (-23.3°C to -20.6°C).
The city’s 1,066-foot (325-meter) elevation and inland north-central Ohio location create stable continental climate, and the Vermilion River watershed spanning 268 square miles influences local microclimates.
Sugar maples (Acer saccharum) and northern red oaks (Quercus rubra) fullfilling zone 6a requirements, grows well in region’s glacial soils and transitional topography between Ohio’s plains and Appalachian foothills.
2. Zone 6a in Bucyrus
Bucyrus is in USDA planting zone 6a, with winter temperatures reaching -10°F to -5°F (-23.3°C to -20.6°C). The city’s 1,001-foot (305-meter) elevation along the Sandusky River provides thermal moderation.
The area recccives 23.3 inches (58.1 cm) of annual snowfall supporting hardy perennials and woody plants.
3. Zone 6a in Crestline
Crestline occupies USDA planting zone 6a, with winter minimums of -10°F to -5°F (-23.3°C to -20.6°C).
The town’s elevation of 1,148–1,165 feet along Sandusky River headwaters and north-central Ohio’s agricultural plains creates stable microclimates. Continental airflow patterns and proximity to Lake Erie moderate temperature extremes.
Suitable plants include hydrangeas (Hydrangea spp.), Japanese maples (Acer palmatum), and crape myrtles (Lagerstroemia spp.).
4. Zone 6a in Galion
Galion is in USDA planting zone 6a, where winter temperatures reach -10°F to -5°F (-23.3°C to -20.6°C).
Galion’s location at 800–1,400 feet elevation on glaciated terrain creates consistent zone 6a conditions. Glacial topography and narrow Olentangy River influences Galion’s climate.
Native species like sugar maple (Acer saccharum), white pine (Pinus strobus), and northern red oak (Quercus rubra) grows here.
5. Zone 6a in Mansfield
Mansfield belongs to USDA planting zone 6a, experiencing winter minimums of -10°F to -5°F (-23.3°C to -20.6°C).
The city’s elevation of 1,240–1,493 feet creates cooler microclimates, and northwest wind exposure maintains zone 6a conditions.
Sugar maple (Acer saccharum), white oak (Quercus alba), and eastern white pine (Pinus strobus) have zone 6a adaptation, tolerating winter extremes and Mansfield’s 42.5-inch annual rainfall.
6. Zone 6a in Shelby
Shelby occupies USDA planting zone 6a, where winter temperatures reach -10°F to -5°F (-23.3°C to -20.6°C).
The community’s 1,099 ft elevation enhances nighttime cooling, and the Black Fork of the Mohican River flowing through downtown generates localized humidity that moderates extreme temperatures in nearby areas.
Sugar maples (Acer saccharum), eastern white pines (Pinus strobus), and bur oaks (Quercus macrocarpa) grows here.
7. Zone 6a and 6b in Tiffin
Tiffin falls in USDA planting zones 6a and 6b, where winter temperatures range from -10°F to 0°F (-23.3°C to -17.8°C).
The Sandusky River creates microclimates throughout the city, with sheltered areas supporting zone 6b plants and exposed uplands remain in zone 6a. This continental climate produces a 175-day growing season making both cold-hardy perennials and temperature-sensitive species viable here.
8. Zone 6a and 6b in Wellington
Wellington occupies USDA zones 6a (-10°F to -5°F/-23.3°C to -20.6°C) and 6b (-5°F to 0°F/-20.6°C to -17.8°C).
The village’s 860-foot (260-meter) elevation and gentle topography enable cold air drainage, forming distinct microclimates.
Sugar maple (Acer saccharum), white oak (Quercus alba), and eastern white pine (Pinus strobus) matches zone 6a-6b temperature requirements.