© 2020, Countryside - All Rights Reserved, Extract Natural Dye for Wool from Goldenrod Plants, Why Teach Classes on How to Knit, Spin, Weave or Felt, Countryside Machinery on the Homestead e-edition Flip Book. A hardiness zone is a geographic area defined to encompass a certain range of climatic conditions relevant to plant growth and survival.. Arizona USDA Zone Map . There’s also the question of the number of days in your growing season, which influences what you can or can’t expect to produce in your garden. The results of these cold spells has been to bring the pattern of the map back similar to what it was. U. S. planting zones are based on the weather history of any given area. For example, if a plant is listed in the zone … Alright, let’s get started! For many gardeners, this means about a half-zone change. The latest version of the USDA Zone Map was jointly developed by USDA's Agricultural Research Service (ARS) and Oregon State University's (OSU) PRISM Climate Group, … There are only slight pattern changes from the original map, and for this reason we have decided to save work and retain the original map without an update, as this is the best match for the British Isles without any temporary warming patterns which may be misleading. USDA. These numbers represent the hardiness zone developed by Harvard’s Arnold Arboretum, which put together guidelines to give us a notion of how plants would survive the temperatures in a particular region. 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. Plant by Transplants Broccoli. The winter temperatures can drop to -10 degrees below zero F. Plants sold in nurseries and greenhouses are generally marked with growing requirements and the hardiness zone. Mississippi enjoys a rather temperate climate and according to the Mississippi USDA planting map, the state includes zones 7a, 7b, 8a, 8b and 9a. This is the USDA Mississippi planting zone map You can look at this map to learn the Mississippi climate zones and which one you live in in order to find your USDA planting zone, simply look at the map and locate where you live Then, match the color of that location to the legend to the right What Planting Zone Do I Live In. USDA. Beets, for example, are recommended for planting in zone 1 from February 1 to March 1. Herbs to Grow in Zone 11. Alabama USDA Zone Map . For example, Portland, OR, is in Heat Zone 4. USDA hardiness zone 6a covers much of the southern part of Ohio. Welcome to the Plant Hardiness Zone Map of the British Isles. Press the “Use My Location” button. There are 11 planting zones on the USDA Plant Hardiness Map in the contiguous United States and southern Canada. Although he has snow longer than the valley below, he can produce a nice crop of corn because he has a longer growing season. You may be like me and are wondering if a micro-climate is affecting your plants and homestead? Agricultural Research Service, U.S. Department of Agriculture. This is roughly where we distribute transplants to your local garden center at the proper time for planting. A northern half of a California planting zone can be anywhere from 5a to 10b. Based on the USDA Hardiness Zone Map, this interactive version covers the country of United Kingdom which ranges from Zone 6b to Zone 10b. The jet stream and coastal winds modulate the weather in London and Portland making them similar to Tallahassee. Planting zones give you an easy way to understand when to plant. Planting plants, vegetables and flowers that are appropriate for your US growing zone will make sure that your garden is happy and healthy year after year. Thanks. 03 of 54. USDA. The main problem is the fact that the British Isles lies so far north of the equator, where both winter and winter nights are long. $29.00 Malvern Hills English Rambling Rose. Whereas, plants from other country's zones 10a & 9b can whithstand short, colder outbreaks than us and survive, in the British Isles they must endure a winter which is several months long with low light levels and wet weather. Start by finding your USDA Hardiness Zone with our Zone Map. What Planting Zone Is Va . USDA Plant Hardiness Zone Map. Vegetables to Grow in Zone 11. And click to hide it<\/a><\/b>. How to Find Your Planting Zone. You’ll usually hear of the zones on this map referred to as growing zones, hardiness zones, or planting zones. Planting Zones 1 and 2a, the coldest, represent Canada. Plant Maps. All plants have a certain temperature range in which they can grow, also known as their hardiness. The bulk of America lies in planting zones 4 to 8. These dates can help you plan (and I love my garden journal for this) your gardening tasks like when to add chicken manure compost. If I look at the hardiness Zone map it looks like I'am in zone 7 (light green)on the farmers almanac map. USDA Map. This means that on a really cold year, the coldest it will get is 30°F.On most years you should be prepared to experience lows near 35°F.. Below is a list of planting guides for Zone 10a. The zones are listed at the top of the chart. Central and southern Florida lie in zones 9 to 11. The lower the number, the cooler it is in summer. I was shocked too! If you live in Europe check this picture to see what European plant hardiness zone you live. A hardiness zone is a geographic area defined to encompass a certain range of climatic conditions relevant to plant growth and survival.. Be aware of the hardiness zone of your area before you decide to buy plants. document.write("You may also switch the map's colour zone information off<\/a> and on<\/a><\/b> to display a physical map of the British Isles including the warmer major towns and cities, which apear as white patches, and also the various cooler elevations, which apear as darker patches. Look for a plant’s hardiness zone on plant tags and online. Zone 1 is the coldest; zone 11 is the warmest. But when I type in my zipcode for farmers almanac it says I am zone 5. Our zones range from 0 to 9, where zero is the coldest and 9 is the warmest average conditions. If you keep losing crops or the yields are not up to snuff with some of your plants, you may have a tiny micro-climate affecting their ability to produce. If you live in Canada check this picture to see what Canadian plant hardiness zone you live in. Want to successfully grow fruits, trees, vegetables, perennials, shrubs and more in your garden? Planting Schedule By Zip Code . Plant Hardiness Zones for Australia. These cover heat zones which can be endured by the plant based on how hot it gets in summer in each zone. You may want to bookmark these resources until you know what zones and other basic factors affect you and your garden. If you garden in zone 6, both of these varieties would thrive for you, because zone 6 is within the hardiness range of both plants! Required fields are marked *. Even though hardiness and heat zones are incredibly helpful, they don’t tell the complete story. Since their “asphalt jungles” retain heat, big metropolitan areas may also be somewhat warmer. Wind-sheltered pockets on the south side of a mountain beside a mountain stream create a dramatic difference in climate. Home / Hardiness Zones. If you were used to being in USDA Zone 6b, with an average wintertime low of -5 degrees to 0 F, you're probably now solidly in Zone 7a, which typically registers a low of 0 to 5 degrees. The noticeable differences are to be seen in our zones 10a & 9b. The higher the numbers, the warmer the … Alaska USDA Zone Map . USDA Zones 4b through 10b are represented in Arizona. Although, plants do not suffer from the effects of wind-chill like we do, they can get dehydrated and suffer from windburn in cold easterly winds. But if you garden in zone 5 or zone 9, only one of these two would work for you. Selecting plants suited to your climate will be a key step to success. Most of Texas, however, is in Heat Zone 9 where they experience between 121 to 150 days of temperatures 86+ degrees. Canada's plant hardiness map provides insights about what can grow where. Rhonda and The Pack, Your email address will not be published. There are actually quite a few crops that you can get started in zones 9 & 10! Peas. The question “what planting zone am I in?” is one of the most asked by beginning gardeners. The purpose of each zone is to help people know which plants are able to grow based on the area's lowest average temperature. USDA Zones 7a through 9a are represented in Alabama. 01 of 54. Hardiness Zone Map. by Iain Dawson (Horticultural Research Unit, ANBG) 1991 (Iain has since retired from the Australian National Botanic Gardens) Plant hardiness maps allow producers to label their plants as being suitable for particular areas, and, in theory at least, this results in happy customers who can confidently buy plants that will survive in their locality. The USDA Plant Hardiness Zone Map was revised in 2012 to reflect warming temperatures. Nevertheless, plant hardiness zone maps have become a useful guideline in determining what grows where. palms, cycads, tree ferns, bananas, bamboos, seeds, palm seeds, cycad, pandanus, agave, yucca, banana, rare seeds, wholesale, palm trees, palm tree, nursery, exotic plants, rare palms, rare cycads, indoor, house plants, tree sales, shrub sales, garden nurseries uk, garden nurseries england, exotic trees, garden, plants, shrubs, conifers, tropical, subtropical, fruit trees, succulents, jungle plants, Cornwall, UK, Trebrown Nurseries, Trebrown, treebrown, Phil Markey. Ambient temperatures will be lowered by local frost pockets and by wind-chill. The ocean moderates temperature allowing coastal zones in warm temperate zones to grow a range of plants including subtropical ones. It won’t take you long to remember. The number of days between first and last frost is your growing season. There are now 13 gardening zones, and each zone has inched northward. 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. More specifically, I am in zone 6b. The first frost date allows you to know when you may need to bring any non-hardy plants inside for the cold winter months or harvest the crop. Emily Brontë English Shrub Rose. Planting zones tell us ultimately the temperature of the specific zone. 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.. Be aware of the hardiness zone in your area before you decide to buy plants. T he zones define a minimum range of temperatures that a plant or tree can survive safely in that zone. Once you find that you are in the right zone for a given plant and its water, soil, and sunlight requirements are met, you will need to know how to give it the best care. It’s all about averages – not extremes. Also, zone maps don’t tell us about micro-climates, which are little regions within an area where weather is distinctly different from the rest of the zone. USDA Plant Hardiness Zone Map – INDIANA. Some plants might not survive over winter! Maple, Rose of Sharon and Butterfly bush) can overwinter in zone 5, but with a lot of care and planning. It’s interesting to me, being farther north doesn’t necessarily mean colder temperatures. California planting zones range from zones 5a to11a. Arkansas growing zones can range from 6b to 8a You should always know your planting zone before planning a garden. It’s not uncommon for those of us who live in the mountains, especially 3000 feet or more, to experience snowfall even up until July when others below 2500 feet don’t. Understanding the USDA planting zones you live in can mean the difference between success and failure in your garden. You will only be able to over winter plants suitable for zone 9a once protection has been put in place and a favourable microclimate created. The other factors we’ve discussed also affect the best time for everything gardening. Find your hardiness zone by clicking here! Arkansas … They’re only guidelines, remember there are micro-climates and weather patterns not predictable when establishing guidelines. No other place on the planet, which shares similar winter temperatures is situated so far from the equator, and therefore our problems are quite unique. Some plants might not survive over winter! Zone 5 (-20 to -10): This zone is ideal for radishes, spinach, honeycrisp apples, and lavender. The planting zones, also called hardiness zones, divide the United States, Mexico and Canada into 11 areas. Think of the minimum winter temperature in your area in a typical year. The USA first undertook climatic studies to provide a guide map for plant hardiness of the North American continent. Be aware of the hardiness zone in your area before you decide to buy plants. Who knew? The USDA determined the zones using average annual minimum temperatures in each region. We now understand what the first set of numbers on a plant label means, but what about the second set? The regions are defined by a 10-degree Fahrenheit difference in the average annual minimum temperature. Alabama USDA Zone Map . Have a look at the map and find the number for your area for growing plants, trees, … For instance, I am in zone 6. USDA Plant Hardiness Zone Map. Coldest Temperature in your local region = Your Zone-45°C (-49°F) – Zone 1-45 to -40°C (-49 to -40°F) – Zone 2-40 to -35°C (-40 to -31°F) – Zone 3-35 to -29°C (-31 to -20°F) – Zone 4 The rainfall is reliable year round; average annual lowest temperature 5°C. The figures below offer a general guide to determining Plant Hardiness Zones. For example, many clematis vines are suitable for zones 4 to 9. USDA Zones 1a through 8b are represented in Alaska. You require a javascript capable browser to view this document as intended. A plant rated hardy to Zone 4b would likely thrive in Zone 5a, do well on good sites in Zone 4b, and might survive in quite protected sites in Zone 4a. The American Horticultural Society developed the heat zone map. The system of Plant Hardiness Zones was developed by the United States Department of Agriculture and, put simply, is a geographically defined area in which a specific category of plant life is most likely to thrive. However, an area such as Miami, Florida, (USA) is Zone 10 where the lowest average temperature is only -1.1C. The general trend had been a period of increased warming over the decade since we first published the map. Hardiness Zone Map. We’ve had an increase in what I would call unusual weather especially this year (2016). USDA. Your plant hardiness zone is an important piece of information to guide your garden decisions. Squash, for example, is a summer vegetable that can not tolerate frost. Agricultural Research Service, U.S. Department of Agriculture. Even though we’re in the same zones, elevated micro-climates have to have their own considerations. Cool-season vegetables, most of which tolerate or even like a little frost, will grow well in zones 7 and southward in the fall. They experience between 30 to 15 days each year with temperatures above 86 degrees. Essential reading: Predicting Cold Hardiness in Palms Trebrown Blog. We love broccoli! Plant Hardiness Zone Maps for Neighboring Countries France Hardiness Zone Map The southern region has zones 5a to 11a. They’re expounded and recorded on in the Sunset Western Garden Book. If you were used to being in USDA Zone 6b, with an average wintertime low of -5 degrees to 0 F, you're probably now solidly in Zone 7a, which typically registers a low of 0 to 5 degrees. An excellent example of a micro-climate is a mountain. Knowing which planting zone you live in goes a long way toward maintaining a successful, long-lasting garden based on your location's climate and environment. The reason is the rising heat from the valley floor late in the fall and early winter which creates a longer season for him. My winter average temperature is ten degrees higher than in zone 5. The new map is generally one 5°F half-zone warmer than the previous map throughout much of the United States. Knowing what planting zone you’re in is important information. The U.S. has 13 zones in all and nearly all plants are assigned a hardiness zone. 02 of 54. Understanding what planting zone am I in according to your zone’s frost dates is crucial. Planting Zones Map United States . My friends in the valley have to use cold frame gardening to help prolong their season. I’m jealous of those of you in zones 9 & 10 because you can still plant broccoli this month! 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. Mississippi Growing Zones for Plants, Trees and Shrubs. USDA. Compared to the 1990 version, zone boundaries in the 2012 edition of the map have shifted in many areas. Many plants, trees and shrubs thrive in these zones and … Parts of northern Minnesota are considered to be in planting zones 2 and 3. These zones take into consideration many more factors which affect crop production than the USDA. The cool- and warm-season vegetables are listed on the left, and the recommended planting dates make up the body of information in the chart. What are Hardiness Zones, Gardening Zones, Growing Zones and Plant Zones? There are 11 separate gardening zones, each divided by 10 degrees Fahrenheit regions. When we took it upon ourselves to create the Plant Hardiness Zone Map of the British Isles we replicated the same zones, based on the same equivalent temperature scale as the USA to form a basic standardisation. Plants are listed as hardy to a range of zones, like Narcissus Grand Primo is hardy in zones 6-10, and Allium Atropurpureum is hardy in zones 4-8. Custom programming and server maintenance by Reinvented Inc.. Connect With Us So, starting your garden when there is a historical risk of frost can wipe out your garden. I am in Zone 8, but my valley micro-climate enables me to grow it and you should see the nice produce I get.”. USDA Zones 7a through 9a are represented in Alabama. Some vegetables can be planted before the last frost, some cannot. Allow the tool to use GPS to determine your location, then the map will show your planting zone. Most plants will be growable in multiple hardiness zones. Notify me via e-mail if anyone answers my comment. The USDA map is the one most gardeners in the eastern United States rely on, and the one that most national garden magazines, catalogs, books, websites and nurseries currently use. Hardiness zones look at the mean temperatures over a thirty-year period. "); If you live in zone 8, you can plant these crops for a winter harvest and for a head start on your garden in the spring. The USDA offers an interactive map of each state’s hardiness zones for prospective green-thumbs to learn their garden zone. Plants can be described as ‘Hardy to Zone 10’ or ‘Hardiness Zone 10’, but what does this mean for the plant and how does it affect where you can use them? 02 of 54. Also remember microclimates exist within each zone. The USA first undertook climatic studies to provide a guide map for plant hardiness of the North American continent. To find your zone, visit the USDA’s website and click on your state or enter your zip code. The USDA divides the country into 11 hardiness zones. We had plans for an updated Plant Hardiness Zone Map of the British Isles, and many months work had already gone into this by 2011. However, the British Isles were then hit by two successively cold winters and a third not quite so cold but nevertheless colder than we had been used to. Here is my list of what to plant in November in zones 7 & 8! For example Portland, OR; Tallahassee, FL; and London, England are considered to be Zone 8, even though they are at 30-, 45- and 51-degrees latitude. Learn which planting zone you are in: If you live in the United States check this picture to see what USA plant hardiness zone you live in. I love planting peas in the fall! Banana trees can sometimes be planted outside farther north than the traditional zone, if they are planted close to the south-facing side of a structure. This means they will likely not survive winters below zone 4 temperatures or climates zone 10 … What Plants Can I Grow in Zone 11? Warm summer, average January maximum less than 30°C. 01 of 54. document.write("See the map using the USDA colour scheme<\/a>. What gardening zone am I in? It combines information about a variety of climatic conditions across the entire country to produce a single map. 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. Planting in October: Zones 9 & 10. Home (current) About; Home; California 1990 USDA Hardiness Zone Map; California USDA Hardiness Zone Map. 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. Alaska USDA Zone Map . Zone 7 (0 to 10): Try planting turnips, arugula, peony, and forget-me-nots if you live in Zone 7. The heat zone map is broken up into 12 zones and is founded on high temperatures. The United States falls within zones 2 through 10. Several micro-climates can exist in one location. Because the state is so large, it is actually further broken down into Northern and Southern planting zones. To find your zone, visit the USDA’s website and click on your state or enter your zip code. Planting zones are areas you can find on a growing zone map that show exactly which plants are best suited to thrive in your given area, or zone. Each of the gardening zones is based on a 10 degree Fahrenheit difference in the average annual minimum temperature. USDA Zones 1a through 8b are represented in Alaska. However each plant’s hardiness is not the only factor that will determine its success. When shopping for new plants for your garden landscape, the terms “plant hardiness zones,” “growing zones” and “planting zones” may at first seem a bit confusing. You’ll notice each zone is broken up into “a” and “b.” There are thirteen growing zones in North America. Knowing what planting zone or hardiness zone you live in is important because it allows you to find plants that have a chance at success in your garden. The 1990 USDA Hardiness Zone Map This webpage was originally based on the 1990 USDA Hardiness Zone Map, which is one of several maps developed to provide this critical climate information. You’ll find many other weather factors play a role in how well a plant will grow for you, including wind, rain and humidity. The USDA Plant Hardiness Zone Map was revised in 2012 to reflect warming temperatures. See below to find your garden planting zone, also known as your hardiness zone. There’s a simple reason for this. The USDA Plant Hardiness Zone Map is based on average temperatures. If you are growing a plant that is marginally cold hardy for your zone, a winter with below average temperatures could damage or kill a plant. To know this, you should take your own temperature readings around your homestead. Do you know the answer? Hardiness ratings are provided for all AGM plants, and also for plants included in the RHS … These were undertaken by two independent groups: The Arnold Arboretum of Harvard University in Cambridge, Massachusetts, and the United States Department of Agriculture (USDA) in Washington, D.C. See the USDA map. $29.00 Olivia Rose Austin English Shrub Rose. 03 of 54. Zone 11 is not, technically, the hottest USDA zone: There are special zones 12 and 13 for Hawaii and Puerto Rico. More specifically, they tell us when the average last frost will occur where you live - and the first frost. There are now 13 gardening zones, and each zone has inched northward. Sunset magazine created its weather zone maps years before the USDA. 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. This is much like the effect experienced by an off-grid homesteader I know who lives a few miles down the road. $31.00 Claire Austin English Climbing Rose. The U.S. has 13 zones in all and nearly all plants are assigned a hardiness zone. For many gardeners, this means about a half-zone change. These maps were compiled on average temperatures, so they can’t account for unusual weather patterns. Because the zone number increases the further south you go, choose plants that are your zone and lower. Your email address will not be published. Temperate zones experience the distinct four seasons. 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. So keep these dates in mind as guidelines, especially when buying new plants in the spring, planning your garden strategy, implementing gardening tips, or putting your garden to bed for the winter. You’ll notice each zone is broken up into “a” and “b.” The “a” portion of the zone typically has a winter which is five degrees colder than the “b” portion. Therefore, you must read these zones as the maximum potential temperature for an area once windbreaks have been put in place. Consequently, there are very few plants, labelled as zone 9 or 10 that can be grown here. Hardiness zones remove some of the confusion experienced by gardeners when trying to determine whether a plant will endure the winter cold or summer heat in their area. Getting in the Zone: What Gardening Zone am I in? Planting zones help determine when and what to plant throughout the year. USDA Plant Hardiness zones are defined by the average lowest temperate during the winter in that region. Our head office in Parley, Dorset (UK) is classed as Zone 9 in the USDA and states that the average lowest temperature we face is -6.7 degrees Celsius. Planting Zone By Zip Code Showing 80 results New This Year. 04 of 54. For example, if you live in zone 6, choose plants that are winter hardy to zones 6, 5, 4, 3 and 2. For example - If you see from the map that you are in a potential zone 9a then you can over winter plants outdoors, which are suitable for zones 8b, 8a, 7b etc. It means that any plant that has a designation of zone 5, 4, 3, 2, 1 are hardy for your area. The 2012 USDA Hardiness Zone Map Move your mouse over the map to zoom in for a closer look at your area. The US Department of Agriculture produces a garden planting zone map for gardeners based on the average of low temperature readings taken from weather stations throughout the United States. "); Both our map and the USDA maps are inadequate due to factors such as the frequency and duration of cold outbreaks. What Planting Zone Is Illinois . It is important to understand that average minimum air temperatures (protected from wind & direct sun) are used in defining these zones. Knowing the answer to what planting zone am I in can even help save you time and money as you won’t purchase plants which won’t thrive in your zone. Most plants have their zones listed on … A hardiness zone map breaks the U.S into 13 zones. Let us know in the comments below. Which in my mind is a big difference so How am I to know which zone to go by. What Are The Planting Zones In Usa . Here in Canada we have a wide range of garden zones with variations in each province. Below is the USDA planting zones map, also known as the USDA Hardiness Zone map. Hardiness Zones, Gardening Zones, Growing Zones and Plant Zones refer to defined geographic regions that can support specific plants, flowers and trees. I would document them over a whole growing season to determine a pattern. You can use our interactive map to find your growing zone. Because the winters are milder there is much more to plant in these zones in October. The last frost date lets you know when it should be safe to put certain varieties in the ground. What Planting Zone Is Missouri . Zone 6 (-10 to 0): Winter squash, butter lettuce, oregano, and coriander all flourish in this zone. The 1990 hardiness zone map was said to be created according to historical weather patterns. A hardiness zone is a defined geographical area in which specific categories of plant life not only tolerate, but are also capable of growing in, based on average climate conditions (primarily, minimum average temperature) for each zone. 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. The Arbor Day Foundation has also issued a Hardiness Zone Map. With the zone information, you can also determine whether the plants you desire need extra attention. T he zones define a minimum range of temperatures that a plant or tree can survive safely in that zone. Safe and Happy Journey, USDA Plant Hardiness Zone Map - http://planthardiness.ars.usda.gov/PHZMWeb/ Hey Canadian neighbors! A zone may get much colder from time to time than the average indicates. Plant hardiness zones are determined according to the expected lowest annual temperatures for a given region. Their homestead is at 3200 feet above sea level up on a mountain. However, we have changed the colour coding for the 7 split zones occurring in the British Isles to colours which are more meaningful to the average user. Growing zones are intended to offer insight into best planting times and what types of plants will thrive. Growing herbs in Zone 11 can be difficult because of the extreme heat of summer. The idea is to give the garden industry a way to communicate the cold hardiness of landscape plants. Hardiness Zones, Gardening Zones, Growing Zones and Plant Zones refer to defined geographic regions that can support specific plants, flowers and trees. Sunset zones are regarded as being more exact than USDA hardiness zones. Some plants might not survive over winter! $29.00 Harlow Carr English Shrub Rose. Planting zones are used as guidelines to determine the hardiness and survivability of various trees and plant species in each geographic area.The hardiness zones are based on local climate. Knowing your planting zone is the first place to start on your journey to becoming a successful gardener. You will need to use a hoop house or low tunnel to help protect your crops from the weather during the colder months of the winter. The next time someone says, “If you are in Zone 8 I wouldn’t try to plant that,” you’ll sound like an expert when you reply, “Intriguing information. Enter your ZIP code in the search bar and click enter. Keep in mind that some times in the right area plant that are designated for zone 6 (Jap. 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.