Thrinax morrisii (Key Thatch palm) hardiness????

[Keith N Tampa (ex SoJax)]

Try Cocothrinax crinata too.  Ours just endured 3 subfreezing nights in the 20’s with only a blanket over the growing point.  It has no damage, even on the foliage that wasn’t covered.  A nearby Thrinax excelsa that is in a more sheltered site up next to the house, lost half its canopy, the half away from the house. A seedling about a foot tall was completely unfazed though the coconut and aloes near it sustained significant damage.  

‘Oh yea, as another comparison point, Cocothrinax argentata is 75% defoliated.  

 

[Austinpalm]

How does Leucothrinax morrisii compare with Zombia antillarum in regards to cold hardiness? Are they similar or is one noticeably more cold hardy than the other?

[Phoenikakias]

On 26/1/2018, 5:07:09, Keith in SoJax said:

Try Cocothrinax crinata too.  Ours just endured 3 subfreezing nights in the 20’s with only a blanket over the growing point.  It has no damage, even on the foliage that wasn’t covered.  A nearby Thrinax excelsa that is in a more sheltered site up next to the house, lost half its canopy, the half away from the house. A seedling about a foot tall was completely unfazed though the coconut and aloes near it sustained significant damage.  

‘Oh yea, as another comparison point, Cocothrinax argentata is 75% defoliated.  

 

My C crinita juvenile (one inch only long stem) survived last year a short termed almost 28 F low. It was only protected from rain and snow. Last element is the most troublesome for me, it is a result of the Aegean jetstream effect by almost every severe cold spell. 

About the C argentata I share same opinion. How about the C argentea?