Southeast Ohio Hills from Bainbridge Ross to Washington Court House has three different USDA Planting Zones 6a, 6b, and 7a, as declared by USDA update in 2023. Winter temperatures here range from -10°F to 5°F (-23.3°C to -15.0°C).
The coldest zone here is USDA zone 6a (-10°F to -5°F / -23.3°C to -20.6°C) which covers parts of Ross County. The warmest zone is USDA zone 7a (0°F to 5°F / -17.8°C to -15.0°C) which includes parts of Friendship and Ross County.
Most towns like Bainbridge Ross, Circleville, McArthur area, Peebles, and Washington Court House are in the USDA zone 6b (-5°F to 0°F / -20.6°C to -17.8°C) with winter lows of -5°F to 0°F.
Some areas here span multiple USDA zones like Friendship (6b-7a) and Ross County (6a-6b-7a). Individual towns like Bainbridge Ross, Circleville, McArthur area, Peebles, and Washington Court House are all in USDA zone 6b.
Locate your Southeast Ohio Hills Town’s USDA planting zone using our interactive planting zone map or USDA hardiness zones table, given below.
USDA Planting zones Map – Southeast Ohio Hills Towns
Select or type your Southeast Ohio Hills Town in the sekection box below, to find its USDA Planting zone.
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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
Hardiness zones Table – Southeast Ohio Hills Towns
The table given below lists all the Southeast Ohio Hills Towns along with there USDA Hardniess zones.
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What Are the 3 USDA Hardiness Zones in Southeast Ohio Hills Towns?
Zone 6a, 6b and 7a are the 3 primary USDA hardiness zones in Southeast Ohio Hills towns. McArthur sits in zone 6a conditions, Bainbridge Ross falls within zone 6b. Circleville has zone 6b temperatures, and Friendship is in zone 6b. Peebles keeps zone 6b conditions, and Ross County covers both zones 6a and 7a. Washington Court House gets zone 6b winters.
1. Zone 6a in McArthur
McArthur lies in USDA planting zone 6a having annual minimum winter temperatures of -23°C to -21°C (-10°F to -5°F). McArthur ground elevation is 656 to 984 feet in the Appalachian area, which creates colder conditions here than the lower river valleys nearby.
Heavy forests cover this area and help keep zone 6a temperatures steady, and cold air flows through valleys which affects the local climate. Raccoon Creek present in the area helps keep temperatures stable. McArthur marks the northern border where warmer-climate plants can grow in southern Ohio’s higher areas.
White oak (Quercus alba) and chestnut oak (Quercus montana) grow well in zone 6a McArthur because these oak trees can handle -23°C (-10°F) winter lows.
2. Zone 6b in Bainbridge Ross
Bainbridge Ross falls within hardiness zone 6b with winter lows reaching -21°C to -18°C (-5°F to 0°F). Bainbridge Ross is situated along Paint Creek at 735 feet elevation, and the flowing creek water helps keep USDA zone 6b temperatures moderate here.
Ross County’s rolling hills provide good growing conditions, and the rich soil from the creek supports plant growth, also being near water makes growing seasons longer. Paint Creek’s water mass stops extreme temperature drops here.
3. Zone 6b in Circleville
Circleville is in USDA growing zone 6b having annual minimum temperatures of -21°C to -18°C (-5°F to 0°F). Circleville lies within the Scioto River Valley at 700 to 800 feet elevation, and this low valley land helps keep temperatures stable.
Urban infrastructure like city buildings and roads create 1 to 2°F warmer conditions here than nearby farms, and rich glacial soil provides good water flow for plants. The Scioto River Valley’s warmth stops cold air from settling in low areas in winters.
Flowering dogwood (Cornus florida), Japanese maple (Acer palmatum), and American sycamore (Platanus occidentalis) grows in zone 6b Circleville.
4. Zone 6b in Friendship
Friendship lies in plant hardiness zone 6b having winter temprature minimums of -21°C to -18°C (-5°F to 0°F). Friendship is along the Ohio River at 528 feet elevation, and being near this large river keeps temperatures moderate and prevents extreme colds.
Friendship has the lowest elevation among southern Ohio zone 6b communities and it supports plants like Sycamores (Platanus occidentalis) and silver maples (Acer saccharinum).
5. Zone 6b in Peebles
Peebles falls within USDA gardening zone 6b with winter lows of -21°C to -18°C (-5°F to 0°F). Peebles’s 820 feet elevation near Ohio Brush Creek, and its position in the Appalachian foothills creates special climate spots with less snow than northern Ohio.
Rolling land topography present here reduces frost damage, and temperatures stay consistent supporting plants like Black-eyed Susans (Rudbeckia).
6. Zones 6a and 7a in Ross County
Ross County contains zones 6a and 7a across 689 square miles, with elevation and river closeness deciding zone borders. Zone 6a covers open northern hills above 1,000 feet elevation, while zone 7a includes river valleys and flood areas below 600 feet.
The land ranges from 548 feet along the Scioto River to 1,200 feet at Farrell Hill. This 652-foot elevation difference creates 5 to 10°F temperature changes during winter months.
7. Zone 6b in Washington Court House
Washington Court House is in USDA climate zone 6b with winter minimums of -21°C to -18°C (-5°F to 0°F). Washington Court House lies at 965 feet elevation alongside Paint Creek, and this elevation ensures zone 6b temperatures.
Urban heat island effect makes temperature extremes less severe and it supports plants like Eastern redbud (Cercis canadensis), flowering dogwood (Cornus florida), and sycamore (Platanus occidentalis).