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It has been adapted by and to other countries (such as Canada) in various forms. A plant may be described as "hardy to zone 10": this means that the plant can withstand a minimum temperature of 30 to 40 °F (−1.1 to 4.4 °C). Unless otherwise specified, in American contexts "hardiness zone" or simply "zone" usually refers to the USDA scale.
Gardenia 'Aimee' is an early-flowering (spring) form. [27] Cultivars such as G. 'Shooting Star' and G. 'Chuck Hayes' are more cold-hardy, roughly to Zone 7. [clarification needed] [28] [29] G. 'Kleim's Hardy' is a dwarf form to 1 m high and wide with star-shaped flowers, it is tolerant to Zone 7.
Gardenia is a genus of flowering plants in the coffee family, Rubiaceae, native to the tropical and subtropical regions of Africa, Asia, Madagascar, Pacific Islands, [1] and Australia. [ 2 ] The genus was named by Carl Linnaeus and John Ellis after Alexander Garden (1730–1791), a Scottish naturalist. [ 3 ]
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 ...
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 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.
Gardenia tubifera, also called golden gardenia, is a species of flowering small tree in the family Rubiaceae, native to Asia. It is a small tree, growing to a height of 2–4 m (6–12 ft) high with a spread of 1–2 m (3–6 ft). It prefers tropical conditions and will not tolerate temperatures below freezing.