What plant hardiness zone is Derby Line

Derby Line is located at Orleans County, Vermont (VT), USA.

Plant hardiness zone (winter frost zone or gardening zone) for Derby Line is 4a by the USDA scale.

Coldest zone's winter temperature is −30 … -25 °F.

Plants of 4a USDA hardiness zone suitable for outdoor gardening and growing in this winter frost zone 4a USDA.

Derby Line, Vermont @ wikipedia.