Department Of Agriculture Hardiness Zones

The usda plant hardiness zone map is a product of usda agricultural research service ars.

Ts eamcet 2020 live updates. The usda plant hardiness scale divides growing condition into increments of 10 degrees fahrenheit 55 degrees celcius. In 1990 and 2012 the us department of agriculture usda updated the maps. Usda growing zones and extreme minumum temperatures.

Often we are asked by plants users about the usda plant hardiness zone map but neither plantsnpdt nor the usda nrcs as a whole are responsible for this map. In 1960 the united states department of agriculture usda created a series of plant hardiness growing zones based on the 30 year average annual extreme minimum temperature. The map is based on the average annual minimum winter temperature divided into 10 degree f zones.

The 2012 usda plant hardiness zone map is the standard by which gardeners and growers can determine which plants are most likely to thrive at a location. The primary piece of data used to delineate the zones is the average annual winter temperature experienced in that area. The usda plant hardiness zone map is a valuable agricultural and horticultural reference.

Usda plant hardiness zone is used to predict a plants ability to survive the winter. The usda hardiness zone map is an attempt to divide the country into zones that give us some idea weather certain plants can be grown in any given area.