Hardy Palm and Subtropical Board
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Posted by Jim Wilmington DE 7a on 6/21/2017, 8:54 am, in reply to "Jim"
>> Oregon coast the dry period is generally 8-12 weeks or more! <<
Understood. But our droughts come with 90F+ days on end. The soil dries out like crazy at those temperatures as anything with roots sucks up all the water it/they can find.
I've seen established woody stock like Arbor vitae, Photinia, & Prunus severely damaged and some outright killed in these conditions. Plants sited on top of hills and rises are, naturally, more susceptible. I lost unestablished hardy Hibiscus (2 plants) in such a summer drought.
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
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