Kirkwood's Hardiness Zone
Our records indicate the United States Department of Agriculture has given Kirkwood 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 Kirkwood's climate. If you are looking for plants suitable for growing in the Kirkwood area, head on over to our page on plants that grow well in Kirkwood, CA.


Metal Arbor Trellis

Brass Watering Can

Brass Decorative Faucet Handle

Metal Seed Storage Box

Raised Garden Bed Kit
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 Kirkwood is in growing zone 6b this means that plants there can survive temperatures as low as 10 to 15 degrees Fahrenheit. Plants chosen for Kirkwood'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: 95646
Longitude: -120.0641
Latitude: 38.693
Lowest Avg Temperatures (F): -5 to 0

Metal Seed Storage Box

Cluck Around Sign

Metal Arbor Trellis

Fiskars Garden Harvest Basket
