Gardening Heat Zone Map

Heat zones range from 1 no heat days to 12 210 or more heat days.

Gardening heat zone map. The ahs plant heat zone map includes 12 zones each indicating the average yearly number of days with temperatures over 86 f 30 c. These are areas which range in minimum temperatures from 60 degrees fahrenheit to 70 degrees fahrenheit. But more and more you will begin to see two ratings for a given plant such as 5 10 11 1. Because heat zone ratings are relatively new not all catalogs web sites and garden centers currently indicate a plant s heat zone.

With an average minimum winter temperature of 20 to 30 degrees f zone 9 features active gardens throughout the entire year. The map is based on the average annual minimum winter temperature divided into 10 degree f zones. The first pair of numbers is the cold hardiness zone. Click on the map to display a pop up window with the plant hardiness zone average temperature and temperature range.

This threshold represents the point when the plants start suffering from the heat. 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. To assist arizona gardeners plantmaps has derived zones indicating the average number of days each year that an area experiences temperatures over 86 degrees f. Each zone indicates the average number of days that zone experiences temperatures exceeding 86 f.

Located in california arizona texas florida and along the gulf of mexico coast this zone features warm winters and hot summers. 151 180 days 86 f. Obtain plant hardiness zone information. These heat zones range from less than one heat day zone 1 to more than 210 heat days zone 12.

Planting zone 9 is considered a year round planting zone. This system was designed for the gardening and agricultural industry. Click here to go to the usda website and see a map of your state s zones. The map breaks the country up into 12 zones.

Leaflet plantmaps openstreetmap contributors. 121 150 days 86 f. The map is divided into thirteen distinct 10ºf zones which are further divided into sub zones of 5 f. 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.

Considered the standard measure of plant hardiness the usda plant hardiness zone map is based on average annual minimum winter temperatures. A map called the ahs plant heat zone map has been created to help gardeners determine what species of plants thrive best in particular regions of the country in summer.