List of hardy palms


Hardy palms are any of the species of palm that are able to withstand brief periods of colder temperatures and even occasional snowfall. A few palms are native to higher elevations of south Asia where true winter conditions occur, while a few others are native to the warmer parts of the temperate zone in North America. A few of these temperate climate palms can tolerate hard freezes with little or no damage. Many of these "hardy " species can be cultivated in warmer parts of temperate climates.
The cold hardiness of palms varies by species. The hardiest species are found in the tribe Trachycarpeae, Washingtonia, and Rhapis, with species which are found in the wild in areas where the mean temperature of the coldest month of the year is not much less that, and Trachycarpus, with species which are found in the wild in areas where the mean temperature of the coldest month of the year is as low as. Members of the above palms and other genera are sometimes grown in areas where they are not truly hardy, overwintering with the aid of various kinds of artificial protection.

Fan palms

The fan palms include all of the hardiest palms.
Few palms with pinnate leaves tolerate much frost. They belong to several tribes of the Arecaceae, with the species listed here belonging to Tribe Areceae, Tribe Cocoseae and Tribe Phoeniceae.
Some plants used in subtropical landscaping in temperate climates like much of Europe, northern China/Japan, Korea, the northern USA, New Zealand, etc. that are commonly referred to as "palms", but are not palms, i.e. not members of the Arecaceae family, include: yuccas, Aloidendron barberae, Cordyline australis, Cordyline indivisa, Cycas revoluta, Macrozamia communis, Macrozamia johnsonii, Macrozamia riedlei, Cyathea australis, Cyathea capensis, Cyathea cooperi, Cyathea dealbata, Cyathea medullaris, Dicksonia antarctica, Dicksonia squarrosa, Pseudopanax ferox, and occasionally the sumac Rhus typhina.

Hardiness

In general, hardy palms can only tolerate brief periods with temperatures in the range. As such, this generally limits hardy palm cultivation and long term specimens to zone 7a or higher. Some hardy palms can be cultivated in areas with low temperatures slightly below this range when given wind sheltering. In the US, hardy palm cultivation is generally attempted from USDA zones 6b/7a southward.
In very cold winter areas below zone 6b, cold hardy palms have been cultivated by partially covering plants with mini-green house coverings and wraps. Some garden enthusiasts in severe cold winter areas have gone as far as heating the interiors of these winter enclosures. As such, there are occasional reports of hardy palms be cultivated in areas with severe winters with low temperatures below.

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