Usda Plant Hardiness Zones – This animation illustrates how the hardiness zones for plants have changed between 1990 and 2006 based on an extensive updating of u.s. Usda hardiness zone 6 covers a large portion of the united states. Each zone represents ten degrees of temperature difference. That range may be wide for some varieties and species but narrow for others.
Usda Plant Hardiness Zones
Gardening Map Of Warming U.s. Has Plant Zones Moving North : The Salt : Npr from www.npr.org
Plants that might otherwise be hardy in your zone might be injured if soil moisture is too low in late autumn and they enter dormancy while suffering moisture stress. The usda (united states department of agriculture) has kept temperature records for decades and published the first recommended growing zone map in 1960.
Usda Plant Hardiness Zones State Maps Of Usda Plant Hardiness Zones
If you see a hardiness zone in a gardening catalog or plant description, chances are it refers to this usda map.
The way the map works is like this:
The usda plant hardiness zones are related to the average lowest minimum temperature at a location.
The usda plant hardiness map is an upgrade from the 1990โs map, which was not nearly as sophisticated as the new map, released at the beginning of 2012.
Alternatively, discover plenty of exciting garden ideas for your geographic area.
