Hardy Palm and Subtropical Board
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Re: A little disappointing + female Trachy inflorescences and Washy update :
I think we've seen with jwitt in New Mexico that W. Filifera is a full zone hardier in a dry, semi-arid winter climate than in our wet east coast locations. That is to say, in a place like Albuquerque it may take 5F and bounce back whereas if it saw 5F in North Carolina, it would be lights out.
If I were living right next door to you and decided to plant a Filifera, I would be very tempted to create a large, raised berm with sharply draining soil, liberally spiked with lime. Around Thanksgiving time, I would probably put down a large plastic barrier on the ground below the palm to keep the rootball especially dry during the colder months.
Lastly, I might think of ways to protect the crown, the terminal bud area, from collecting water that may then freeze and create havoc with the growing point.
And ALL of the above I'd do if I was at least 20 years younger!! When I was born, Eisenhower was President. At my age, I like LOOKING at palm trees far more than winterizing them.
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