Copernicia alba

[Fusca]

1 hour ago, Jonathan said:

I was just reading Eric in Orlando's freeze thread, sounds like C alba breezed through unscathed, so clearly absolute low temps are not the problem for me.

Absolutely. 😊 The alba I posted a pic of went through 9°F and 13°F undamaged protected with a string of lights and a sheet in 2021.  Then in 2022 it was dug out and moved 250 miles to the south (and complained a lot) but it is chugging along.  Here's additional freeze data: 

 

[Jonathan]

12 hours ago, tim_brissy_13 said:

Yeah that’s the question. My gut feel is that they’re more like Bismarckia, Schippia etc where they need significant heat even though they are capable of withstanding freezes. Unfortunately as you know the USDA zones are close to useless for us, I basically ignore them. 
 

That being said, I’d recommend keeping them and giving them a go. In general for species that aren’t super rare, I think there’s more to be gained by pushing the limits than sending a few up here where they may not even thrive anyway. I also suspect they’ll be the type of palm that is hardier when it gets a bit of size as opposed to when they’re small seedlings. Coccothrinax and Schippia seem to be a bit like this for me. 

Sage advice, and that's my gut instinct too.

Also looking at this website https://palmasenresistencia.blogspot.com/2010/10/copernicia-alba-english.html, if you can ignore the eccentric translation...they seem to be quite aquatic, which may explain some of my previous problems!