What plant hardiness zone is Grenville

Grenville is located at Day County, South Dakota (SD), USA.

Plant hardiness zone (winter frost zone or gardening zone) for Grenville 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.

Grenville, South Dakota @ wikipedia.