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.

How many hardiness zones are there in the United States?

13 zones
The USDA Hardiness Zone Map divides North America into 13 zones of 10°F each, ranging from -60°F (-51°C) to 70°F (21°C).

What are planting zones in USA?

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.

What is the highest hardiness zone for the United States?

The warmest zone in the 48 contiguous states is the Florida Keys (11b) and the coldest is in north-central Minnesota (2b). Puerto Rico has the warmest hardiness zone in the United States at 13a.

Where is Zone 7 in the United States?

USDA Zone 7 The zone includes Long Island, coastal New Jersey, eastern Maryland, most of Virginia and North Carolina, western South Carolina, southern Tennessee, the northern halves of Georgia, Alabama and Mississippi and much of Arkansas.

Where is zone 8 in the US?

US States in Hardiness Zone 8 In North America, Zone 8 is one of the warmest zones, containing much of the southern quarter of the United States, including much of North Carolina, South Carolina, Georgia, Alabama, Mississippi, Florida, Louisiana, Arkansas, Texas, Arizona, California, and coastal Oregon and Washington.

Where is zone 9 in the United States?

However, especially cold-hardy plants may not survive the summer heat of this region. The Zone 9 map includes the following states: Florida, Georgia, South Carolina, Texas, Alabama, Louisiana, Mississippi, Utah, New Mexico, Arizona, Nevada, California, Oregon, Washington, and Hawaii.

Where is Zone 5 in the US?

It extends across the northern part of the Central US (including Minnesota, Iowa, Nebraska, and Wisconsin). It reaches all the way to the Northwest (including Montana, Wyoming, Northern California, Oregon, Washington, and Idaho). Parts of Colorado, Nevada, and Alaska also fall under Zone 5.

Is Austin zone 8a or 8b?

Though most of Austin remains in Zone 8b, where we were in the old map, if you zoom in on our region you’ll see some slight differences. One of the cool things about the new map is that you can go to the USDA website, enter your ZIP code and get a precise reading.

What growing zone is Katy?

9a
Katy, Texas is in USDA Hardiness Zones 9a.

How to determine your hardiness zone?

USDA Growing Zones and Extreme Minumum Temperatures. In 1960,the United States Department of Agriculture (USDA) created a series of plant hardiness growing zones based on the 30-year average annual

  • Canadian Plant Hardiness Index. In 1967,Agriculture Canada used plant survival data to create a Canadian Plant Hardiness Index.
  • Zones Not Stones.

    • What is a hardiness zone, and why is it important?

    The most recent (2012) version of the map has 13 zones and includes all 50 states and Puerto Rico.

  • The numbered zone designations in this map represent the average annual extreme minimum temperatures at given locations.
  • The lower the zone number,the colder the zone.

    • How to understand USDA hardiness zones?

    Winds: Weather factors like winds from jet streams and coastal air movement can change growing conditions in specific areas.

  • Urban Heat: Metropolitan areas are generally warmer than rural areas,even if they belong to the same region.
  • Rainfall: The greater the rainfall,the moister the soil.

    • What is my hardiness zone ZIP code?

    USDA’s Hardiness Zone Map is the best tool for determining your hardiness zone. There is an online version of the hardiness zone map that allows you to search by zip code or state. In addition to this information, seed packet maps are often based on it as well.