Editor's Picks
The Global Conservation Consortium for Oak (GCCO) has...
Amy Byrne
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Feb 17, 2020
Hayrettin Karaca, an IOS member and one of Turkey's best-...
Roderick Cameron
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Feb 10, 2020
There are a growing number of unique hybrid selections that...
Ryan Russell
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Feb 10, 2020
Plant Focus
Quercus tarokoensis (local name 太鲁阁栎 tai lu ge li, "oak of Taroko") is a fairly unknown oak species, restricted to eastern 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.
