Central Jersey from Hunterdon County to Eastern Union County has three different USDA Planting Zones 6b, 7a, and 7b, as declared by USDA update in 2023. Winter temperatures here range from -5°F to 10°F (-20.6°C to -12.2°C).
The coldest zone of Central Jersey is USDA zone 6b (-5°F to 0°F / -20.6°C to -17.8°C) which covers parts of Bernardsville and Hunterdon County. The warmest zone is USDA zone 7b (5°F to 10°F / -15.0°C to -12.2°C) which includes Carteret and Woodbridge.
Most towns like Princeton, New Brunswick, Madison, Chatham, and Flemington are in the USDA zone 7a (0°F to 5°F / -17.8°C to -15.0°C) with winter lows of 0°F to 5°F.
Some areas lies in multiple USDA zones like Eastern Union County (7a-7b), Mercer County (7a-7b), Middlesex County (7a-7b), and Bernardsville (6b-7a).
To locate your USDA planting zone of Central Jersey use our interactive map or the USDA hardiness zones table provided below.
Central Jersey USDA Planting Zones Map
Select or type your Central Jersey location in selection box below, to find its USDA Growing 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
Central Jersey USDA Planting Zones Table
Central Jersey has three USDA Planting Zones 6b, 7a, and 7b. The 31 USDA hardiness zone locations in Central Jersey are Belle Mead, Bernardsville, Bound Brook, Carteret, Chatham, Cranbury, Eastern Union County, Flemington, Florham Park, Hunterdon County, Iselin, Lawrenceville, Linden, Madison, Mercer County, Middlesex County, Millstone, Monmouth Junction, Morganville, New Brunswick, North Plainfield, Old Bridge, Plainsboro Center, Princeton, Rahway, Short Hills, Skillman, South Plainfield, Summit, Watchung, and Woodbridge. The 31 USDA hardiness zone locations in Central Jersey are listed below.
| Location | USDA Hardiness Zone |
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