St. Clair's Hardiness Zone

Our records indicate the United States Department of Agriculture has given St. Clair a growing zone designation of 6b. Sometimes also called the planting zone or hardiness zone, this zone number gives you an idea of what plants can and cannot grow in St. Clair's climate. If you are looking for plants suitable for growing in the St. Clair area, head on over to our page on plants that grow well in St. Clair, MO.

Brass Watering Can

Elegant brass watering can with classic design and durability.

Wooden Chicken Coop

Spacious and secure home for your backyard chickens.

Raised Garden Bed Kit

Easy-to-assemble raised garden bed for better soil control and drainage.

Large Greenhouse Kit

Spacious greenhouse for extending your growing season.

Fiskars Garden Harvest Basket

Sturdy basket for collecting and carrying your garden harvest.

Understanding your growing zone is very important because it is a measure of the lowest temperature that a plant can survive, helping you to decide what plants would grow best in your particular climate. Since St. Clair is in growing zone 6b this means that plants there can survive temperatures as low as 10 to 15 degrees Fahrenheit. Plants chosen for St. Clair's climate should be chosen with this in mind or plants should be moved inside to keep their core temperature in the right range if necessary.

USDA Growing Zone: 6b

Zip Codes: 63077

Longitude: -90.9933

Latitude: 38.348

Lowest Avg Temperatures (F): -5 to 0