The USDA Hardiness Zone Map divides North America into 11 separate planting zones; each growing zone is 10°F warmer (or colder) in an average winter than the adjacent zone. If you see a hardiness zone in a gardening catalog or plant description, chances are it refers to this USDA map. To find your USDA Hardiness Zone, enter your zip code or via
How do you know what hardiness zone you are in?
You can determine your gardening zone at the U.S. Dept. of Agriculture website. You can either enter your ZIP code or, for even more precision, use the interactive map to click down to within a half-mile of your home. via
Where is Zones 10 and 11?
In the United States, most of the warmer zones (zones 9, 10, and 11) are located in the deep southern half of the country and on the southern coastal margins. Higher zones can be found in Hawaii (up to 12) and Puerto Rico (up to 13). via
Where is Zone 7 in the United States?
USDA zone 7 contains southern Oklahoma, a chunk of northern Texas, southern New Mexico, central Arizona, southern Utah and southern and western areas of Nevada. The zone extends into eastern California and west-central Oregon/Washington. via
What grows in zone 6b?
Perennial favorites that thrive in this zone include:
What zone is Bay Area?
Although the Bay Area broadly falls under zone 10a and 10b of the USDA Plant Hardiness Zone Map, the localized weather pattern and microclimates differ widely across this region. Based on your location, you will know whether you fall under 'foggy' or 'sunny' conditions. via
Is hardiness a zone?
Legend. 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. The map is based on the average annual minimum winter temperature, divided into 10-degree F zones. via
Is Zone 6 colder than zone 7?
For example, Zone 7 has an average low temperature of 0 to 10 degrees Fahrenheit; 7a has a low of 0 to 5 degrees, and 7b has a low of 5 to 10 degrees. Zone 6 has an average low between -10 and 0 degrees, and Zone 8 has an average low between 10 and 20 degrees Fahrenheit. via
What are zones 7 9?
Zones 7-9 encompass the southern United States. This includes both southeastern states like Alabama, Georgia, and Mississippi, as well as southwestern regions like New Mexico and California. Because these zones have a low latitude, it's where most gardeners live. via
What is the difference between zone 9a and 9b?
Plants in zone 9a will tolerate minimum temperatures of no lower than 20 to 25 degrees Fahrenheit. In 9b, the lowest temperature for flowers or plants should be 25 to 30 degrees Fahrenheit. Zone 9 occupies most of the lower states including California, Arizona, Texas, and Florida, to name a few. via
What is the difference between Zone 8 and Zone 9?
As cited in the description of Zone 8, the biggest readily apparent difference between Zones 8 and 9 is that Zone 9, a thermal belt, is a safer climate for citrus than Zone 8, which contains cold-air basins. via
What grows best in zone 9a?
Zone 9 Planting Guide
When can I plant in Zone 5?
Generally, planting is dictated by the first frost free date and the last frost free date, which in the case of USDA zone 5, is May 30 and October 1, respectively. The earliest vegetables for zone 5, those that should be planted in March through April, are: Asparagus. via
When can I plant in Zone 9b?
When should I start seeds in zone 9b? As a general rule, most vegetables should be started indoors 6-8 weeks before your last frost date. In zone 9b, this would be around January 1st – January 18th. Or if you're directing seeding vegetables into the garden, most seeds should be sown after your last frost date. via