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A hardiness zone is a geographic area defined as having a certain average annual minimum temperature, a factor relevant to the survival of many plants. In some systems other statistics are included in the calculations. The original and most widely used system, developed by the United States Department of Agriculture (USDA) as a rough guide for ...
The Mexican palmetto (Sabal mexicana) is a close relative of the cabbage palmetto that is native to southern Texas and northern Mexico. Dwarf palmetto (Sabal minor) is considered hardy to USDA zone 6b, like the needle palm. It can tolerate short periods of temperatures as low as −18 °C (0 °F).
An updated plant hardiness zone map released by the USDA last month shows nearly half of the country is now classified in a "warmer" zone than it used to be. That includes parts of Southeastern N.C.
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Hardiness of plants describes their ability to survive adverse growing conditions. It is usually limited to discussions of climatic adversity. Thus a plant's ability to tolerate cold, heat, drought, flooding, or wind are typically considered measurements of hardiness. Hardiness of plants is defined by their native extent's geographic location ...
On the 2012 Plant Hardiness Zone map, Greater Columbus (and a good portion of the rest of Ohio) was in Zone 6a, where the average lowest temperature ranges from -10 to -5 degrees Fahrenheit. In ...
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It is widely grown in gardens in parts of the United States in hardiness zones 10 through 11 as a climber or groundcover, though it can be hardy down to -6.7 °C (20 °F) in zone 9a. [9] [5] It requires full sun, well-drained soil, and either a trellis or a shrub to climb on. [13]