Knowing your hardiness zone and when to plant your garden is vital to gardening success or failure! In 2012, the USDA updated the hardiness zones for the United States as a response to our changing climate conditions.
"The 2012 USDA Plant Hardiness Zone Map is the standard by which gardeners and growers can determine which plants are most likely to thrive at a location. The map is based on the average annual minimum winter temperature, divided into 10-degree F zones."
St. Louis falls into zones 6a and 6b. As planting times vary by zone, check seed packets and other resources to determine when to plant what. We are always here to answer any questions you may have!