USDA Zone 5a is a zone in the USDA hardiness zones system - this zone system can be very helpful to gardeners as it can be useful in determining if your plants are well suited to your garden's local climate. There are currently 1103 gardens being tracked on Folia that are in USDA Zone 5a.

Some popular plants that tend to grow very well in this zone include Basil, Onion, Tomato, Chili pepper, Lettuce, Sweet pepper, Bean, Spinach, Carrot, and Cucumber.

Areas recently identified in Folia as being in this zone include Toronto (Canada), North Augusta (Canada), Greeley (United States), Yonkers, NY (United States), Lincoln, NE (United States), Warrenville (United States), Iowa City (United States), Ottawa, Ontario (Canada), Macomb County, Michigan (United States), Monona, WI (United States), Toronto (Canada), (United States), Deerfield (United States), Orangeville (Canada), green bay wi (United States), Niagara Falls (Canada), Oshawa (Canada), Bowmanville (Canada), newmarket (Canada), Des Moines (United States), liberty, new york (United States), South Suburbs (United States), (Canada), Keswick, ON (Canada), (Canada), Pointe Claire (Canada), Montreal (Canada), Ottawa (Canada), Merritt (Canada), and Orland Park, IL (United States).

If you are in 5a, lowest temperatures in your garden should be around -28°C [-18°F] to -26°C [-15°F].

The corresponding Sunset zone for 5a is approx. A1, 1B, A2.