What plant hardiness zone is Glen Echo Park

Glen Echo Park is located at Saint Louis County, Missouri (MO), USA.

Plant hardiness zone (winter frost zone or gardening zone) for Glen Echo Park 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.

Glen Echo Park, Missouri @ wikipedia.