What plant hardiness zone is Crystal Lake Park

Crystal Lake Park is located at Saint Louis County, Missouri (MO), USA.

Plant hardiness zone (winter frost zone or gardening zone) for Crystal Lake Park is 6a by the USDA scale.

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

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

Crystal Lake Park, Missouri @ wikipedia.