Hardy Palm and Subtropical Board
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Posted by Jim Wilmington DE 7a
on 3/16/2020, 3:03 pm, in reply to "HGTV article
>> Hardy in Zones 8a-11, although itís been reported to grow in Zone 7b. <<
It's an 8a tree. But, I've grown one in DE for 13 years with a lot of mulch and a trashcan over it in winter. It has defoliated several times, but always comes back. It is stunted and hasn't come close to forming a trunk. It is, in a practical sense, a costa-palmate version of a Sabal Minor. I have to say, though, it has surprised me with its hardiness. Some winters, even with the aforementioned protection, it was subjected to many hours of sub 5F temperatures.
Jim, Wilmington, DE, 7a
Last 30 Years Avg. Winter Low: 7.50F
Last 20 Years Avg. Winter Low: 8.35F
Last 10 Years Avg. Winter Low: 8.40F
Favorite Palms: Species: Phoenix Canariensis / Genus: Sabal