What plant hardiness zone is Oak Harbor

Oak Harbor is located at Ottawa County, Ohio (OH), USA.

Plant hardiness zone (winter frost zone or gardening zone) for Oak Harbor is 6b by the USDA scale.

Coldest zone's winter temperature is −5 … 0 °F.

Plants of 6b USDA hardiness zone suitable for outdoor gardening and growing in this winter frost zone 6b USDA.

Oak Harbor, Ohio @ wikipedia.