What plant hardiness zone is Rio Grande

Rio Grande is located at Cape May County, New Jersey (NJ), USA.

Plant hardiness zone (winter frost zone or gardening zone) for Rio Grande is 7b by the USDA scale.

Coldest zone's winter temperature is +5 … +10 °F.

Plants of 7b USDA hardiness zone suitable for outdoor gardening and growing in this winter frost zone 7b USDA.

Rio Grande, New Jersey @ wikipedia.