Gardening Us Hardiness Zone Map

Nrc also produces a map that shows plant hardiness zones for canada based on the usda extreme minimum temperature approach. 30 f to 35 f zone 10a.

National Gardening Association Gardening Zone Map Gardening Zones Plant Zones

Interactive gardening and plant hardiness zone map for canada.

Gardening us hardiness zone map. 20 f to 25 f zone 9a. The usda hardiness zone map divides north america into 11 separate planting zones. 2012 usda plant hardiness zone map courtesy usda agricultural research service.

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 us department of agriculture divided out the map of the us in areas which range from planting zone 1a to planting zone 13b. 0 f to 5 f zone 7a.

Planting zones or growing zones are illustrated on a map known as the usda plant hardiness zone map. The us department of agriculture created the usda plant hardiness zone map to provide a standard definition of climatic conditions relevant to plant growth and survival. Each growing zone is 10 f warmer or colder in an average winter than the adjacent zone.

It has been adapted by and to other countries. Each zone is on average 10 degrees warmer or. Click here to see both canadian planting zone maps.

The map is available as an interactive gis based map for which a broadband internet connection is recommended and as static images for those with slower. 15 f to 20 f zone 8a. 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.

The ones are based on the average lowest temperatures across the united states. 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. If you see a hardiness zone in a gardening catalog or plant description chances are it refers to this usda map.

It is used by the agriculture industry to define what plants grow best in what areas. A hardiness zone is a geographic area defined to encompass a certain range of climatic conditions relevant to plant growth and survival. This map of climate zones will help you select plants for your garden that will survive a typical winter in your region.

Because of this the zones listed in the canadian and us maps are not on the same scale so keep that in mind before following one or the other. The united states department of agriculture usda developed the map. The map is based on the average annual minimum winter temperature divided into 10 degree fahrenheit zones.

Zone 1 is the coldest region and zone 11 is the warmest. Using historical climate data from canadian national climate data archive this interactive map created by plantmaps covers canada which ranges from zone 1a to zone 10b. The usda hardiness zone map divides the united states and canada into 13 zones with zone 1 being the most northern and zone 13 the most southern.

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