These Climate Zones do NOT correspond to the USDA Hardiness Zones. 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. These Zones give a general idea of the climatic factors you can expect in your Marin neighborhood and will help to guide you in plant selection and planting times. On average, there are 110 summer days above 90°F (32°C),with the highest temperatures recorded between 111 and 117°F (44 to 47°C).About 85 nights have temperatures below 32°F (0°C),with lows between 11 and 0°F (–12 to –18°C). Copyright © 2021 Sunset Publishing Corporation. 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. These durable plants thrive in the sun, and are drought tolerant. Partly because of the unusually low temperatures created by this canyon action, there is a broad range of winter lows in Zone 24. The crucial difference between Arizona’s intermediate desert (Zone 12) and the low desert (Zone 13) is winter cold. Because of the greater ocean influence, this climate supports a wide variety of plants.You can see the range of them at the Los Angeles County Arboretum in Arcadia. These zone descriptions will guide you in choosing the right plants for your garden. Get fresh recipes, wine pairings, weekend getaway ideas, regional gardening tips, home design inspiration, and more. Further south, they will remain evergreen. 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. Alternatively, discover plenty of exciting garden ideas for your geographic area. Winter lows average from 42°F (5°C) in Santa Barbara to 48°F (9°C) in San Diego. Marked by a short growing season and relatively mild summer temperatures, Zone 1A includes the coldest regions west of the Rockies, excluding Alaska, and a few patches of cold country east of the Great Divide. If you plant something at the wrong time for your zone, you’ve wasted time, money, and effort. Many subtropicals that do well in Zone 13 aren’t reliably hardy here, but succeed with protection against the extreme winters. Along with hardy evergreen conifers, tough deciduous trees and shrubs form the garden’s backbone. 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). 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. Another snowy winter climate, Zone 2A covers several regions that are considered mild compared with surrounding climates. Just keep them well watered. Hot summer days are followed by mild nights; near-freezing winter nights are followed by daytime temperatures near 60°F (16°C).On average, there are 110 summer days above 90°F (32°C),with the highest temperatures recorded between 111 and 117°F (44 to 47°C). On average, there are 110 summer days above 90°F (32°C),with the highest temperatures recorded between 111 and 117°F (44 to 47°C).About 85 nights have temperatures below 32°F (0°C),with lows between 11 and 0°F (–12 to –18°C). Both zones, then, have very poor climates for such plants as fuchsias, rhododendrons, and tuberous begonias. The result was a map that defined 11 hardiness zones (0–10) across southern Canada (Ouellet and Sherk 1967c). ZONE 2A: Cold mountain and intermountain areas. However, in warm climates (zones 8-11) with hot, dry summers, paperwhite bulbs can be planted outside where they will bloom annually for many years. ZONE 2A: Cold mountain and intermountain areas. This climate zone shares similarities with its neighbors—the cold-winter Zones 1, 2, and 3, and the subtropical low desert, Zone 13. Likewise, macadamia nuts and most avocados can be grown here. Like Zones 1 to 3, Zone 11 has cold winters, and like Zone 13, it has hot summers. When temperatures drop below that, orchardists can lose even their trees. In this climate, gardens that include such plants as ornamental figs, rubber trees, and scheffleras can become jungles. ZONE 2B: Warmer-summer intermountain climate. The winters are mild, the summers cool, and the air seldom really dry. Corp., Menlo Park, Calif.), the western U.S. is divided into a large number of Climate Zones. If you are not sure which hardiness zone you belong to, please check the map below. 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. 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. Spring winds can set back plants, but summer storms cool down gardens, shield plants from the sun, and supply a little extra water. This climate zone shares similarities with its neighbors—the cold-winter Zones 1, 2, and 3, and the subtropical low desert, Zone 13. Winters are short and mild,with brief frosts occurring up to 15 nights per year.Average winter minimums range from 36 to 42°F (2 to 6°C), with extreme lows from 27 to 15°F (–3 to –9°C). If you’ve ever put in the effort to start your plants from seeds, or you’ve shelled out the money to plant a garden from seedlings someone else has started, you understand why planting zones matter.. Areas falling in Zone 22 have a coastal climate (they are influenced by the ocean approximately 85 percent of the time).When temperatures drop in winter, these cold-air basins or hilltops above the air-drained slopes have lower winter temperatures than those in neighboring Zone 23. 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. To see the eastern tip of Southern California, click on the thumbnail image under the main map. This is another great zone for all kinds of deciduous fruit trees and ornamental trees and shrubs. The mild days and chilly nights during the growing season extend the bloom of summer perennials like columbines and Shasta daisies. Like Zones 1 to 3, Zone 11 has cold winters, and like Zone 13, it has hot summers. Windbreaks help.Here, as in Zone 13 and the eastern parts of Zone 10, summer rains are to be expected and can be more dependable than winter rains.And as in Zone 13, the best season for cool-season crops (salad greens, root vegetables, cabbage family members) starts in September or October. 5. The USDA offers a handy planting zones by zip code search function. Plants that grow well here, but not in much colder zones, include bougainvillea, bouvardia, calocephalus, Cape chestnut (Calodendrum), flame pea (Chorizema), several kinds of coral tree (Erythrina), livistona palms, Mexican blue and San Jose hesper palms (Brahea armata, B. brandegeei), giant Burmese honeysuckle (Lonicera hildebrandiana), myoporum, several of the more tender pittosporums, and lady palm (Rhapis excelsa). But where hills are low or nonexistent, it runs inland several miles. The lack of a pronounced chilling period during the winter limits the use of such deciduous woody plants as flowering cherry and lilac. The characteristics of Zone 11 are described on page 59. The growing season here in Zone 2b runs from 115 days in higher elevations and more northerly areas to more than 160 days in southeastern Colorado. 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. ZONE 21: Thermal belts in Southern California’s areas of occasional ocean influence. Hailing from the temperate shores of the southeastern Mediterranean, these bright, peppery-scented bulb flowers are not winter hardy. This is the coldest zone in which sweet cherries and many apples grow. 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. In the Sunset Western Garden Book (2015), Sunset Pub. Actually, the winters are so mild here that lows seldom fall below freezing. You’ll find this zone stretched over Colorado’s northeastern plains, a bit of it along the Western Slope and Front Range of the Rockies, as well as mild parts of river drainages like those of the Snake, Okanogan, and the Columbia. This zone has a mild marine climate (milder than Northern California’s maritime Zone 17) because south of Point Conception, the Pacific is comparatively warm. Browse an A-Z plant list by common and botanical names. Kirkland (and most of the Puget Sound lowlands) are solidly in Sunset zone 5. 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 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. It also shows up in western Montana and Nevada and in mountain areas of the Southwest. This system is popular in the West, whereas the USDA system is predominant in the East. Extreme low temperatures of 6°F (–14°C) have been recorded in Zone 12. Growing seasons are very long—up to 225 days. You live in Sunset Zone 11. 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. To view detailed map, click the “Click to Enlarge” button at left. Growing seasons are very long—up to 225 days. 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. 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). 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. SUNSET is a registered trademark 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. More rain falls in the east than in the west, and the Pecos River drainage receives more precipitation in summer than in winter. 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. Here is a link to Sunset Climate Zones: The growing season is 100 to 150 days. In the Sunset Western Garden Book (2015), Sunset Pub. Here is a link to Sunset Climate Zones: Therefore, to ensure your new acquisition will survive and grow year after year, you will need to compare the hardiness zone of your area with the hardiness zone of your … Zone 13, on the other hand, averages more than 11 months between killing frosts, when it gets them at all. Sunset's Plant Finder makes it easy to find the best plants for your backyard: Search plants by color, size, type, and growing needs. The mean maximums in July and August are 5 or 6°F cooler than the highs of Zone 13. Zone 11 is not, technically, the hottest USDA zone: There are special zones 12 and 13 for Hawaii and Puerto Rico. Most plants will be growable in multiple hardiness zones. Zone 1 is the coldest; zone 11 is the warmest. When deciding what to plant in each zone, the plant must be able to thrive in a climate … ZONE 10: High desert areas of Arizona and New Mexico. In years when snow comes late or leaves early, protect plants with a 5- or 6-inch layer of organic mulch. The growing season here in Zone 2b runs from 115 days in higher elevations and more northerly areas to more than 160 days in southeastern Colorado. 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 mild days and chilly nights during the growing season extend the bloom of summer perennials like columbines and Shasta daisies. Windbreaks help. Extreme winter lows (the coldest temperature you can expect in 20 years) average 28 to 25°F (–2 to –4°C). 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). Sunset's climate zone maps take all these factors into account, unlike the familiar hardiness zone maps devised by the U.S. Department of Agriculture, which divides most of North America into zones based strictly on winter lows. Hot summer days are followed by mild nights; near-freezing winter nights are followed by daytime temperatures near 60°F (16°C).On average, there are 110 summer days above 90°F (32°C),with the highest temperatures recorded between 111 and 117°F (44 to 47°C). Annual plants in USDA Hardiness Zones 3-8, they can be grown as perennials in Zones 9-11. 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).On average, there are 110 summer days above 90°F (32°C),with the highest temperatures recorded between 111 and 117°F (44 to 47°C).About 85 nights have temperatures below 32°F (0°C),with lows between 11 and 0°F (–12 to –18°C). However each plant’s hardiness is not the only factor that will determine its success. 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… The all-time high temperatures aren’t greatly significant in terms of plant growth. You live in Sunset Zone 11. 13B is the warmest zone which averages a minimum temperature of 70 degrees Fahrenheit. Several such canyons between Laguna Beach and San Clemente are visible on the map. Just keep them well watered. Your garden can be in ocean air or a high fog one day and in a mass of interior air (perhaps a drying Santa Ana wind from the desert) the next day. 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. Zone 18 never supplied much commercial citrus, but home gardeners who can tolerate occasional minor fruit loss can grow citrus here. And Sunset offers a climate zone map that can help you select appropriate plants. Lows of 25 to 22°F (–4 to –6°C) often come in.The cold winter season calls for spring planting. Planting a garden is an investment of both time and money. About 85 nights have temperatures below 32°F (0°C),with lows between 11 and 0°F (–12 to –18°C). 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 . 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. Learn How to Garden! ZONE 2B: Warmer-summer intermountain climate. Why Planting Zones Matter. Air Plants. From March to May, strong winds (to 40 miles per hour) can damage young tender growth. Copyright © 2021 Sunset Publishing Corporation. Medium to High Desert of California and Southern Nevada Growing season: early April to late Oct. Summers are sizzling, with 110 days above 90 degrees F/32 degrees C. Balancing this is a 3 1/2-month winter, with 85 nights below freezing and lows from 11 degrees to 0 degrees F/-12 degrees to -18 degrees C. Scant rainfall comes in winter. 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. Zone 10 has a definite winter season—75 to more than 100 nights below 32°F (0°C).That favors deciduous fruits, though late frosts can work against apricot crops. Spring winds can set back plants, but summer storms cool down gardens, shield plants from the sun, and supply a little extra water. Use of this site constitutes acceptance of our. Gardeners can plant warm-season vegetables as long as they are short-season varieties. Find your Climate Zone--the key to knowing what plants thrive in your area. ZONE 3A: Mild areas of mountain and intermountain climates. Hot summer days are followed by mild nights; near-freezing winter nights are followed by daytime temperatures near 60°F (16°C).On average, there are 110 summer days above 90°F (32°C),with the highest temperatures recorded between 111 and 117°F (44 to 47°C). 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. These are considerably higher than the temperatures in neighboring Zone 18. Robin's Garden Column; Growing Guide Library; Growing Vegetables. When temperatures drop below that, orchardists can lose even their trees. A more sophisticated approach has been followed by Sunset which defines Climate Zone Maps based not only on hardiness or heat tolerance, but also on precipitations, wind, humidity and various other climate related factors. Aloe Vera. Seed companies and online plant retailers most commonly reference USDA hardiness zones, and sometimes they also use Sunset zones. What We Do; ZONE 11: Medium to high desert of California and southern Nevada. of Sunset Publishing Corporation. Using climate zone information. Fruits and vegetables that thrive in long, warm summers, such as melons, gourds, and corn, tend to do well here. That’s why you’ll find orchards in this zone in almost every state in the West.You’ll also find this warm-summer, snowy-winter climate along Colorado’s Western Slope and mild parts of the Front Range; in Nevada from Reno to Fallon, then north to Lovelock; in large areas of northern Arizona and New Mexico; and in mild parts of the Columbia and Snake River basins. 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. Zone 23 lacks either the summer heat or the winter cold necessary to grow pears,most apples, and most peaches. Since there's apparently a discussion going on about merging some articles, I don't want to upset the apple cart. The even-numbered zone is the climate made up of cold-air basins and hilltops, and the odd-numbered one comprises thermal belts. The USDA zone map divides the country into 26 or so different zones, while the Sunset system has over 40. About Us. The difference is that Zones 20 and 21 get weather influenced by both maritime air and interior air. Average winter minimums range from 36 to 42°F (2 to 6°C), with extreme lows from 27 to 15°F (–3 to –9°C). Along with hardy evergreen conifers, tough deciduous trees and shrubs form the garden’s backbone. Sunrise & Sunset; Moonrise & Moonset; Planets Visible Tonight; Meteor Showers Guide; ... Garden Tips by Month; How-To Videos; Advice. Zone 10 has a definite winter season—75 to more than 100 nights below 32°F (0°C).That favors deciduous fruits, though late frosts can work against apricot crops. Typical winter lows are 37° to 43°F (3 to 6°C); extreme 20-year lows average from 25 to 22°F (–4 to –6°C).Alltime record lows range from 21 to 14°F (–6 to –10°C). 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 . More rain falls in the east than in the west, and the Pecos River drainage receives more precipitation in summer than in winter. Extreme cold averages from 35° to 28°F (2 to –2°C), with all-time lows in the coldest stations at about 20°F (–6°C). ZONE 1A: Coldest mountain and intermountain areas of the contiguous states. A notorious portion of this 15 percent consists of those days when hot, dry Santa Ana winds blow. The range of minimum average temperatures for zone 11 is between 40°F and 50°F or +4.4°C and +10°C. There is also a competing system known as the " Sunset climate zones ." Over a 20-year period, winter lows averaged from 22 to 17°F (–6 to –8°F).The all-time lows recorded by different weather stations in Zone 18 ranged from 22 to 7°F (–6 to –14°C). Corp., Menlo Park, Calif.), the western U.S. is divided into a large number of Climate Zones. 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. If you see a hardiness zone in a gardening catalog or plant description, chances are it refers to this USDA map. The Western Plant Encyclopedia cites many ornamental plants that do well in Zone 19 but are not recommended for its neighbor because of the milder winters in Zone 19. Zone 12 averages about 8 months between freezes, 9 months between killing frosts of 28°F (–2°C) or lower. It also shows up in western Montana and Nevada and in mountain areas of the Southwest. Hot summer days are followed by mild nights; near-freezing winter nights are followed by daytime temperatures near 60°F (16°C). This climate zone shares similarities with its neighbors—the cold-winter Zones 1, 2, and 3, and the subtropical low desert, Zone 13. Pavonia (Zones 8-11) The wind’s power and dryness usually causes more problems than the heat itself—but you can ameliorate scorching with frequent sprinkling. 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. This interactive map divides regions based on average minimum temperatures. Default is all zones. The crucial difference between Arizona’s intermediate desert (Zone 12) and the low desert (Zone 13) is winter cold. ZONE 19: Thermal belts around Southern California’s interior valleys. In Zones 20 and 21, the same relative pattern prevails as in Zones 18 and 19. Caring for Plants In Your Zone and Climate. To further assure success, grow vegetables from seedlings you start yourself or buy from a nursery or garden center. ZONE 23: Thermal belts of Southern California’s coastal climate. In Albuquerque,New Mexico, and Benson and Kingman, Arizona, average winter minimums range from 32 to 23°F (0 to –5°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).
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