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They are numerically about 6 lower than the USDA system. For example, Australian zone 3 is roughly equivalent to USDA zone 9. The higher Australian zone numbers had no US equivalents prior to the 2012 addition by USDA of zones 12 and 13. The spread of weather stations may be insufficient and too many places with different climates are lumped ...
According to the new map released in November 2023, about half of the United States has shifted to a new hardiness zone. That's really big news if you consider 80 million Americans use this map to ...
Various hardiness ratings are published. In the United States (US), the most widely used is the U.S. Department of Agriculture (USDA) system of hardiness zones based on average minimum yearly temperatures. [4] This system was developed specifically for the extremely diverse range of conditions in the US, from baking desert to frozen tundra.
February 26, 2024 at 11:01 AM. ... the USDA creates a 13-zone map to be "the standard by which gardeners and growers can determine which plants are most likely to thrive at a location."
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Zamioculcas zamiifolia is winter-hardy in USDA Zones 9 and 10. [4] Dutch nurseries began wide-scale commercial propagation of the plant around 1996. [5] It was first described in 1829 by Loddiges, who named it Caladium zamiifolium; Heinrich Wilhelm Schott later reassigned it to the genus Zamioculcas, and Adolf Engler renamed it Zamioculcas ...
The USDA released a new hardiness zone map and half of the country has shifted. Read more here so you're ready to plant this spring. Gardeners, take note! The USDA released a new hardiness zone ...
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