CIDP's doing a pretty good job pulling through Zone 8a

[CodyORB]

Apologies for the terrible Google Street View resolution. This is Nye County, zone 8a with annual lows in the 10-15F range. Apparently CIDP's are hardy to only 15-20. Having visited the area a number times they've been around for more than a decade, possible 2. Not irrigated either, surviving on only around 4" of rain annually!

Also surprising is the area's routine exposure to below-freezing temperatures, for up to 4 months out of the year (although it warms up quickly when the sun rises).

I'm left to guess there's either an ideal microclimate (although not anywhere near a building), or they're better at resisting "dry" cold (relative humidity in the 5-15% here, very high diurnal temperature range).

Edited July 8, 2020 by CodyORB
adding climate table

[kinzyjr]

19 minutes ago, CodyORB said:

I'm left to guess there's either an ideal microclimate (although not anywhere near a building), or they're better at resisting "dry" cold (relative humidity in the 5-15% here, very high diurnal temperature range).

Option 2.

Most of the Phoenix genus is much more tolerant of cold in a desert climate than in our humid subtropical region.

[TexasColdHardyPalms]

I'd classify that as surviving but the palm doesnt look that great.  Cipd are incredibly bud hardy.