Gardening Zone
Department of agriculture usda and natural resources canada nrc.
Gardening zone. Based on the 1990 usda hardiness zone map this interactive version covers the state of washington which ranges from usda zone 4b to usda zone 9a. These are areas which range in minimum temperatures from 60 degrees fahrenheit to 70 degrees fahrenheit. List of 1990 hardiness zones for cities in washington.
The two most commonly referenced hardiness zone maps are those produced by the u s. Each growing zone is 10 f warmer or colder in an average winter than the adjacent zone. To pan and zoom use your mouse and scroll wheel the arrow keys on your keyboard or the zoom slider on the left side of your map.
Integrated pest management for your home garden or farm with beneficial insects and other organic gardening supplies. Click on the map to display a pop up window with the plant hardiness zone average temperature and temperature range. Obtain plant hardiness zone information.
For the first time the map is available as an interactive gis based map for which a broadband internet connection is recommended and as static images for those with slower internet access. To find your usda hardiness zone enter your zip code or use the map below. Planting zones define generally which plants can survive winter in your area and the zones are typically listed in plant growing guides for reference.
Planting zones or growing zones are illustrated on a map known as the usda plant hardiness zone map. The map is based on the average annual minimum winter temperature divided into 10 degree f zones. The original and most widely used system developed by the united states department of agriculture usda as a rough guide for landscaping and gardening defines 13 zones by annual extreme minimum temperature.
If you are not sure which hardiness zone you belong to please check the map below. The united kingdom lies in usda plant hardiness zones 6 through 9 with some variations across regions. The us department of agriculture divided out the map of the us in areas which range from planting zone 1a to planting zone 13b.