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In this method, common plants with known limits to their range are used. [34] Sunset publishes a series that breaks up climate zones more finely than the USDA zones, identifying 45 distinct zones in the US, incorporating ranges of temperatures in all seasons, precipitation, wind patterns, elevation, and length and structure of the growing ...
Can be grown in the USA, [4] in Zone USDA: 9b-11. [3] It can survive a minimum average temperature of 55°F (12°C) and can tolerate positions in full sun. [ 3 ]
In winter, average minimum temperatures range between 12 °C and 15 °C, and 18 °C to 22 °C in summer. Humidity averages in the 60 to 70 per cent range all year round. [1] Howea spp. grow well in subtropical climes, and are hardy to the USDA zone 9b. They are widely grown in warm temperate climates, and there are also occasional healthy ...
USDA plant hardiness maps, updated for the first time in a decade, show a 2.5-degree Fahrenheit increase in temperatures across the contiguous U.S.
According to the United States Department of Agriculture, the Plant Hardiness zone is 9b with an average annual extreme minimum temperature of 28.5 °F (−1.9 °C). [108] The temperature of the surface water changes with the seasonally varying air temperature.
It may lose leaves if temperature drops below 45°F. [10] In USA, it is hardy to between USDA Zone 9b: to -3.8 °C (25 °F) and USDA Zone 11: above 4.5 °C (40 °F). [18] It prefers to grow in well-drained, [2] acid soils, [11] which are rich and free draining. [5] Loamy soil is the ideal soil type as it does not like poor soils. [7]
Hardiness of plants is defined by their native extent's geographic location: longitude, latitude and elevation. These attributes are often simplified to a hardiness zone. In temperate latitudes, the term most often describes resistance to cold, or "cold-hardiness", and is generally measured by the lowest temperature a plant can withstand.
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