Editor's Picks
The Oak Action Group of Farm Forestry New Zealand is...
Kathryn Hurr
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Jun 10, 2020
Remembering John Fairey, legendary plantsman and founder of...
Adam Black
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May 21, 2020
An intercontinental artificial hybrid raised at Arboretum...
Roderick Cameron
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Apr 12, 2020
Plant Focus
Quercus stenophylloides is a medium-sized evergreen oak (15–18 m tall) restricted to central and northern Taiwan.
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.
