Determining Plant Hardiness Zone

The USDA Plant Hardiness Zone Map is the standard by which you can determine which plants are most likely to thrive at a particular location. The map is based on the average annual minimum winter temperature.

To determine your hardiness zone, simply go to planmaps.com, enter your zip code and press the "Zoom to Zip" button.

The site will provide a detailed map with the hardiness zone. In my case my hardiness zone is 5b or 6a. The lover the number the colder the recorded temperatures.

Each zone is identified by a number and a letter. The numbers goes from high to low or from warm to cold. The letters go from "a" to "b". The letter "b" indicated colder temperatures as compared to "a".

Click inside the map to see the exact hardiness zone for your zip code.

Happy gardening!