What plant hardiness zone am I in?
Plant Hardiness Zone Map
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About San Francisco County
San Francisco, officially the City and County of San Francisco, is a commercial, financial, and cultural center within Northern California. With a population of 808,988 residents as of 2023, San Francisco is the fourth-most populous city in the U.S. state of California behind Los Angeles, San Diego, and San Jose. It covers a land area of 46.9 square miles at the upper end of the San Francisco Peninsula, making it the second-most densely populated major U.S. city behind New York City and the fifth-most densely populated U.S. county, behind four of New York City's boroughs. Among the 92 U.S. cities proper with over 250,000 residents, San Francisco is ranked first by per capita income and sixth by aggregate income as of 2022. San Francisco anchors the 13th most populous metropolitan statistical area in the United States, with almost 4.6 million residents in 2023. The larger San Jose–San Francisco–Oakland combined statistical area, the fifth-largest urban region in the U.S., had a 2023 estimated population of over 9 million.
What is my USDA Plant Hardiness Zone?
Find your 2023 USDA Plant Hardiness Zone based on your current device location, along with a map of plant hardiness zones in your area and in the United States.
Compare the 2023 and 2012 USDA Plant Hardiness Zone Maps to see how the zones have changed over the last decade in your area.
Minimum winter temperatures are a major determinant of whether a particular plant selection can be successfully grown outside year around. There are other factors that influence plant survival, such as snow cover, summer heat, humidity, soil moisture, and spring frosts.
What are Plant Hardiness Zones?
Plant hardiness zones are a system used by gardeners, landscapers, and agriculturalists to help determine which plants are best suited for a specific location. The map of the United States is commonly broken up into 11 zones ranging from zone 1A (the most cold-hardy) to zone 11B (the least cold-hardy). The exact borders of each zone are based on the average minimum winter temperature in that region.
This plant hardiness zone map shows the range of temperatures where plants can survive the winter. The plant hardiness zone is determined by the minimum temperatures and the minimum number of days in a year where the minimum temperature is reached. The plant hardiness zone is helpful because it allows you to select plants that will survive the winter in your area. This will help ensure that your plants are able to survive the winter and are able to provide you with the fruit or vegetable that you are hoping for.
The first geographical zone map was created by the United States Department of Agriculture (USDA) in 1920s to help farmers determine which plants would be best suited for the climate in their area. Since then, it has been a valuable tool for gardeners and farmers to determine which plants are best suited for their region. Plant hardiness zones are a system of mapping the climate of a region. They provide a range of temperatures and the plants that can be successfully grown in those areas.
Dynamic Plant Hardiness Map
Unlike other plant hardiness websites and maps, this site offers a fully dynamic and interactive map that allows you to zoom and pan to see the exact zone and microclimate for your location according to the USDA.
You can find the zone based on your current device location, or by searching for your city, town, ZIP code, or you can search for the zone based on the address you wish to locate.
Plant Hardiness Zone Atlas
Our plant hardiness zone atlas has a list of cities in the United States to help you find the USDA zone of any location in the country.