The time zones in the contiguous United States are often referred to by their generic name, without making a difference between standard time and DST designations. span a wide range from 4b to 10b. Zone 10 has a definite winter season — 75 to more than 100 nights below 32°F. The USDA Plant Hardiness Zone Map (PZHM) was developed using minimum temperature data and the most recent version was released just weeks ago. Arizona State USDA Growing Zones can be figured out by looking at the Arizona USDA zone map for plant hardiness and reading this table below. Some nurseries show the Sunset Western Garden Zones on their display signs. 3-8, 8-1. Interpreting the New Map. Given the wide range of temperature and moisture, it is best to do the research before planting to ensure that what you are hoping to grow will, indeed, grow. Find the best dates for planting and transplanting vegetables and fruit! The purpose of these hardiness zones is to identify how well plants will withstand the cold winter temperatures of these zones. Read on to learn about why these changes have taken place, and how they may affect new plantings as well as seasoned perennials. The United States (and all of North America) is divided into 11 zones. Cool season crops could include beets, cabbage, onions and radish. Often we are asked by PLANTS users about the USDA Plant Hardiness Zone Map, but neither PLANTS/ NPDT , nor the USDA NRCS as a whole, are responsible for this map. USDA Zones 4b through 10b are represented in Arizona. USDA Hardiness Zones. While perhaps not quite intuitive at first, the hot dry climate of the state actually is good for growing several vegetables, including tomatoes, chilies and peppers, eggplant and other crops. Read more articles about USDA Planting Zones. USDA Hardiness Zones. Below is the map for Arizona. Higher elevation areas will experience cold winters, but summer heat will be much milder and more tolerable. Zones in the new map are based on 1976–2005 weather data. Hardiness Zones in the USA. temperatures drop only to 50°F to 60°F. The Sunset guide separates the state into eight zones: 1A, 2A, 2B, 3A, 10, 11, 12, and 13. USDA Arizona Plant Hardiness Map Gardening Zone. Arizona lies in USDA plant hardiness zones 5 through 10a, with winter lows ranging from -20 degrees to 35 degrees Fahrenheit. The plant hardiness zone map of the British Isles is the most detailed ever to be created for this region, and is the product of many months work studying the average winter climate statistics for the periods 1961 to 2000 recorded by the Irish and UK Met Offices.. Just because the big box stores sell a plant doesn’t mean it will actually flower or give fruit here in Phoenix. Information from the zone map helps gardeners to compare their garden climates and determine what plants will grow in their area. The Arbor Day Foundation developed this U.S. Hardiness Zone Map based upon data from 5,000 National Climatic Data Center cooperative stations across the continental United States.. See suggested trees for your region. This puts Phoenix, Arizona in gardening zone 9-10 according to USDA charts and in Sunset Zone 13. Planting zones or growing zones are illustrated on a map known as the USDA Plant Hardiness Zone Map. USDA Hardiness Zones (cold). Some nurseries show the Sunset Western Garden Zones on their display signs. Tree Type Mature Size The Arizona cypress grows to a height of 40–50' and a spread of 25–30' at maturity. Below is the map for Arizona. Cool season crops could include beets, cabbage, onions and radish. You’ve come to the right place! Based on the minimum ten-year average winter temperatures, plant hardiness zone maps have been progressively developed, first by the Department of Agriculture (USDA) for the United States and then more or less applied to the rest of the planet. For example, the average low temperature in zone 3 is -40 to -30 degrees Fahrenheit, while the average low temperature in zone 10 is +30 to +40 degrees Fahrenheit. Scientists use the plant hardiness zones as a data layer in many research models such as modeling the spread of exotic weeds and insects. 01 of 54. Arizona Flag Map. Planting a garden is an investment of both time and money. Within miles of each other, higher altitudes in the mountains and coastal areas of Arizona can be 2-3 zones cooler than urban and desert areas.

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