Each zone has specific requirements for when certain plants should be started. Submitted by The Editors on March 24, 2016 - 2:41pm. According to the Boreal forrest map, we are in it. The designation for my area – 9B — places me in a location subject to winter freeze; however, "first frost" occurred a full month earlier than indicated by the available information (this website indicates first frost occurs in mid November but in my experience it takes place in mid- late October). When to Start Planting According to Your Hardiness ZoneThe United States is broken into 13 hardiness zones. I hope this helps. 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. More than snow, however, a regular feature of where I live is wind — moderate to high winds that can add to the wind chill factor in winter and potentially damage a garden year-around. As a gardener in her seventies, the eyesight isn't what it used to be. Too big a pot and it will look out of scale. Submitted by The Editors on September 9, 2020 - 10:23am. Are they accurate? Hope that helps! While snow isn't a regular occurrence in/around the high desert, it is not uncommon to receive a smattering of snow each winter thanks to the elevation, which sits just above 3,000 feet. Unlike the USDA map, which is based only on minimum winter temperatures, the planting zones map produced by Natural Resources Canada (NRC) considers a wider range of climatic variables, including maximum temperatures and the length of the frost-free period. 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. United States hardiness zones (USDA scale) The USDA system was originally developed to aid gardeners and landscapers in the United States. Will you please tell in which zone Kota, Rajasthan, India is and that what are the best plants to be grown in a highly hot area like this? The name is Chandler. Even zone 1 would be ok as I have found some zone 1 peonies to purchase online. The Garden Tower® 2 vertical planting system is one step toward achieving food security. Something to keep in mind: each 1000 Meters above sea level will be equivalent to a 1 degree increase in latitude, however your day length will not change. Thanks for sharing and explaining the change. 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. Perennials need to be able to survive winter in your area, so it’s important to know how cold it typically gets in your area and whether a particular plant is hardy enough to survive those temperatures. We are south of the tree line and we have quite a number of trees growing-Spruce, Larch, Quaking Aspen, pussy willows, Labrador tea, blueberries, etc. NRC also produces a map that shows plant hardiness zones for Canada based on the USDA extreme minimum temperature approach. There are a few things I've done that have caused my plants to be stressed from heat. Look up your local USDA extension office for more information. Then find the vegetable planting dates for your zone on the chart. Planting at the wrong time of year (spring/fall crops like lettuce in summer), in the wrong spot (tender plants that need shelter out in the open) and underwatering are probably the big ones. It’s likely that the nearest climate station (which is where the frost date is calculated from) is at a lower elevation than your garden, which is why the date is off so much. The zones were created based on the area’s lowest average temperature.