Sunset's Climate Zones are based on winter minimum temperatures, but also include other factors such as summer high temperatures, length of growing season, humidity, and rainfall. The Arbor Day Foundation has also issued a Hardiness Zone Map. Winter temperatures are milder than in neighboring Zone 2a, minimums averaging from 12 to 22°F (–11 to –6°C),with extremes in the –10 to –20°F (–23 to –29°C) range. You will find Lancaster on Page 57 in “Sunset Western Garden Book” which as a gardener you probably own or certainly can access at your local library. Fall-planted crops grow slowly in winter, pick up speed in mid-February, and race through the increasing temperatures of March and April. Growing seasons are very long—up to 225 days. But it enjoys considerably more heat than Zone 24—enough to put the sweetness in ‘Valencia’ oranges, for example—but not enough for ‘Washington’ naval oranges, which are grown farther inland. The growing season is 50 to 100 days. When you order plants from catalogs or read general garden books, you need to know your USDA zone in order to be able to interpret references correctly. While the USDA hardiness map tells you where a plant may survive the winter, Sunset zone maps help you determine where a plant may thrive year-round. Average summer high is 107°F (42°C); the world’s second highest temperature—a scorching 134°F (56°C)—was recorded in Death Valley on July 10, 1913. Sunset Western Garden Zones By Zip Code >>> DOWNLOAD (Mirror #1) If soil moisture is inadequate, the characteristic winds and bright sunlight may combine to dry out normally hardy evergreen plants, killing or badly injuring them. Tender perennials like geraniums and impatiens rarely go out of bloom here; spathiphyllums and pothos become outdoor plants; and tender palms are safe from killing frosts. Various initiatives have taken place to determine how well plants would withstand the cold winter temperatures (Plant Hardiness Zones) or when plants would start suffering from the heat (Plant Heat Zones). Zone 13, on the other hand, averages more than 11 months between killing frosts, when it gets them at all. Numerous others touch the coast between San Clemente and the Mexican border. In years when snow comes late or leaves early, protect plants with a 5- or 6-inch layer of organic mulch. Sunset's Climate Zones are based on winter minimum temperatures, but also include other factors such as summer high temperatures, length of growing season, humidity, and rainfall. The even-numbered zone is the climate made up of cold-air basins and hilltops, and the odd-numbered one comprises thermal belts. If soil moisture is inadequate, the characteristic winds and bright sunlight may combine to dry out normally hardy evergreen plants, killing or badly injuring them. About Us. Extreme lows—the kind you see once every 10 or 20 years—in Zone 21 average 28 to 25°F (–2 to –4°C).All-time record lows in the zone were 27 to 17°F (–3 to –8°C). The Sunset zones, popularized and researched by Sunset Magazine, are derived from climate zones developed by the University of California Cooperative Extension. Since there's apparently a discussion going on about merging some articles, I don't want to upset the apple cart. ZONE 24: Marine influence along the Southern California coast. ZONE 11: Medium to high desert of California and southern Nevada This climate zone shares similarities with its neighbors—the cold-winter Zones 1, 2, and 3, and the subtropical low desert, Zone 13. Hot summer days are followed by mild nights; near-freezing winter nights are followed by daytime temperatures near 60°F (16°C). Hailing from the temperate shores of the southeastern Mediterranean, these bright, peppery-scented bulb flowers are not winter hardy. Fall-planted crops grow slowly in winter, pick up speed in mid-February, and race through the increasing temperatures of March and April. Here is a link to Sunset Climate Zones: Find your Climate Zone--the key to knowing what plants thrive in your area. Sunset's Plant Finder makes it easy to find the best plants for your backyard: Search plants by color, size, type, and growing needs. Extreme winter lows over a 20-year period ranged from 28 to 22°F (–2 to –6°C) and the all-time lows at different weather stations range from 23 to 17°F (–5 to –8°C). Frosts don’t amount to much here, because 85 percent of the time, Pacific Ocean weather dominates; interior air rules only 15 percent of the time. Gardeners can plant warm-season vegetables as long as they are short-season varieties. Record heat usually comes in early October, carried to the coast by Santa Ana winds. Zone 23 lacks either the summer heat or the winter cold necessary to grow pears,most apples, and most peaches. Such plants include bananas, tree ferns, and the like. At the same time, Zone 21 is also the mildest zone that gets sufficient winter chilling for most forms of lilacs and certain other chill-loving plants. Lows of 25 to 22°F (–4 to –6°C) often come in.The cold winter season calls for spring planting. However, I would suggest that any new article contain a somewhat more fleshed-out reference to Sunset Climate Zones, also known as the Western Plant Climate Zones. Corp., Menlo Park, Calif.), the western U.S. is divided into a large number of Climate Zones. This is a zone that offers a good balance of long,warm summers and chilly winters,making it an excellent climate zone for commercial fruit growing. It is too hot, too cold, and too dry for fuchsias but cold enough for tree peonies and many apple varieties, and mild enough for a number of avocado varieties. The USDA Plant Hardiness Zone Map is a product of USDA Agricultural Research Service (ARS) , with assistance from the PRISM Climate Group at Oregon State University . This zone consists mostly of the 3,300- to 5,000-foot elevations in parts of Arizona and New Mexico. They can go weeks without supplemental watering, continuing to display their cheerful blooms the whole time. This interactive map divides regions based on average minimum temperatures. Another snowy winter climate, Zone 2A covers several regions that are considered mild compared with surrounding climates. Like Zones 1 to 3, Zone 11 has cold winters, and like Zone 13, it has hot summers. Gardeners in the western United States sometimes are confused when confronted with the 11 Hardiness Zones … The USDA Plant Hardiness Zone Map is a product of USDA Agricultural Research Service (ARS) , with assistance from the PRISM Climate Group at Oregon State University . Like Zones 1 to 3, Zone 11 has cold winters, and like Zone 13, it has hot summers. These durable plants thrive in the sun, and are drought tolerant. Zone 12 averages about 8 months between freezes, 9 months between killing frosts of 28°F (–2°C) or lower. When deciding what to plant in each zone, the plant must be able to thrive in a climate … Sunset zones are based on total climate and other variables, including the length of growing season, rainfall, temperature lows and highs, wind, humidity, elevation, and microclimates. Winter lows average from 42°F (5°C) in Santa Barbara to 48°F (9°C) in San Diego. Stretched along Southern California’s beaches, this climate zone is almost completely dominated by the ocean. ZONE 11: Medium to high desert of California and southern Nevada. Default is all zones. SUNSET is a registered trademark Copyright © 2021 Sunset Publishing Corporation. ZONE 2B: Warmer-summer intermountain climate. Like Zones 1 to 3, Zone 11 has cold winters, and like Zone 13, it has hot summers. It also includes parts of southern Utah and Nevada, and adjacent California desert. When temperatures drop below that, orchardists can lose even their trees. These Climate Zones do NOT correspond to the USDA Hardiness Zones. These zone descriptions will guide you in choosing the right plants for your garden. Actually, the winters are so mild here that lows seldom fall below freezing. Its frost-free growing season runs from 150 to 186 days. If your garden gets reliable snow cover (which insulates plants), you’ll be able to grow perennials listed for some of the milder zones. Oct 21, 2012 - Gardening ~ Plant Hardiness Zone 11 ( above 40 F ) Group Board. Sunset zones are based on a combination of extremes and averages of minimum, maximum, and mean temperature, rainfall, humidity, and the length of the growing season. All Rights Reserved. Pavonia (Zones 8-11) The original and most widely used system, developed by the United States Department of Agriculture (USDA) as a rough guide for landscaping and gardening, defines 13 zones by annual extreme minimum temperature. To view detailed map, click the “Click to Enlarge” button at left. The zone tends to occur at lower elevations in the northern states (eastern Oregon and Washington as well as Idaho), but at higher elevations as you move south crossing Utah’s Great Salt Lake and into northern New Mexico and Arizona. From March to May, strong winds (to 40 miles per hour) can damage young tender growth. A plant's performance is governed by the total climate: length of growing season, timing and amount of rainfall, winter lows, summer highs, wind, and humidity. ZONE 10: High desert areas of Arizona and New Mexico. While my love is endearing, I am occasionally heartbroken when the odd deep freeze in my zone 8b Austin steals my dear bulbine away.Bulbine Live Plants, avail… Although winter temperatures are lower than in Zone 13, the total hours of cold are not enough to provide sufficient winter chilling for some deciduous fruits. In Zones 20 and 21, the same relative pattern prevails as in Zones 18 and 19. Both of these approaches to mapping plant hardiness zones have also been updated using thin-plate smoothing spline interpolation techniques (McKenney et al. The characteristics of Zone 11 are described on page 59. zone 11. To further assure success, grow vegetables from seedlings you start yourself or buy from a nursery or garden center. Choose plants and find a nursery near you. Hot summer days are followed by mild nights; near-freezing winter nights are followed by daytime temperatures near 60°F (16°C). East of the Sierra and Cascade ranges, you can hardly find a better gardening climate than Zone 3a.Winter minimum temperatures average from 15 to 25°F (–9 to –4°C), with extremes between –8 and –18°F (–22 and –28°C). Read More. Planting a garden is an investment of both time and money. The winters are mild, the summers cool, and the air seldom really dry. If your garden get… The USDA zone map divides the country into 26 or so different zones, while the Sunset system has over 40. Zones 15 and 16 are areas of Central and Northern California that are influenced by marine air approximately 85 percent of the time and by inland air 15 percent of the time.Also worthy of note is that although Zone 16 is within the Northern California coastal climate area, its winters are milder because the areas in this zone are in thermal belts (explained on page 28). Using climate zone information. Winter temperatures here usually hover between 10 and 20°F (–12 to –7°C) at night, with drops between –20 and –30°F (–29 and –34°C) every few years. If you are not sure which hardiness zone you belong to, please check the map below. Lows of 25 to 22°F (–4 to –6°C) often come in.The cold winter season calls for spring planting. When temperatures drop below that, orchardists can lose even their trees. But though the intermediate desert averages only 5 more freezing nights than the low desert (20 in Tucson compared with 15 in Phoenix and El Centro), it has harder frosts spread over a longer cold season.
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