Editor's Picks
A massive Quercus robur stands outside the village of...
Roderick Cameron
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Aug 16, 2020
An article published in Scientific American recounts how...
Website Editor
|
Aug 13, 2020
One of the largest oaks at Melbourne’s Royal Botanic...
Tim Entwisle
|
Aug 09, 2020
Plant Focus
Six oak cultivars originally described by Jef Van Meulder in 2014.
USDA Plant Hardiness Zone Map
In January 2012, the USDA Agricultural Research Service released a new edition of the American Plant Hardiness Map. The previous edition was released in 1990. Two new zones 12 and 13 have been added to this 2012 edition. The zones are based on 1976-2055 weather data, that is 30 years of data. The 1990 edition was based on 13 years of data. See the What's new section of the USDA ARS Web site for details here.
For the first time, the map is available as an interactive GIS-based map.
