So far no luck with agave neomexicana, mine has died back to the core but is alive. Parryi truncata and flagstaff form starting to stress. Green and silver chammy look like goners too, specially with another cold spell coming in this week.

My silver held strong chad, the green not so much. let me know how yours do. Any tips on getting them to come back from spear pull? I only have some Parryi truncata on mounds planted out I am worried about..to scared to check on them. They are covered and had heavy snow on the cover so hopefully that insulated them some. the yuccas and things under there should be fine. I'll know when I pull it back and dig them up for my move soon.

I will treat my palms with copper or peroxide when spring comes. You will have to keep the growing point dry for awhile also. This is the first yr I had any damage to the silver med. or any agaves. Most damage came this past week when we where below freezing for several days.

My A. neomexicana is the only one looking bad so far. (low of -0.5F)

Hydrogen Peroxide with only kill organisms at the time of application.

I just wrote an article for the use of Copper which will persist (will add pictures and better instructions later):
http://www.unusualplants.net/forums/resources/cold-hardy-palm-guide-copper-treatment-of-the-bud-bud-rot.1/

Thanks for a great article which confirmed my suspicion. I totally fried a Pindo and trachy with bud rot, using a Bordo Copper (Tribasic Copper Sulphate 53%) powder mixed with water, the stuff wasn't cheap either. Perhaps also, my mix was to rich. However, dollar store HP saved my unprotected needle last year.
The dampness is truly the killer, as the pathogens need organics and water to feed.

I have a echinocereus triglochidiatus and an echinocerus caespitosus that look a little mushy and they were protected from moisture. Strangely I have 1 of each that weren't protected from moisture and they look fine. I covered my yucca gloriosas with leaves and a plastic container and they seem fine. My Southern Mag Brackens Brown Beauty has very brown leaves right now but I think it will recover. The Edith Bogue looks much better. I wouldn't be surprised if most of my crape myrtles are totally dead (including the roots). I'll have to wait to see in June.

The last cold spell froze over several palms, cacti and agave previously undamaged. I am planning for a mass remodel this spring. Not sure I will even wait for some palms to recover. I think they may all go straight to pots forever. I definitely want to transplant my needle to where my chammy is.

A horribly tough year for us all!

Sorry to hear of the losses folks.
I don't think anybody can trust their zones anymore.

Everyone's had so many mild winters in a row.
But all it takes is one in 30, 50 year lows to

Maybe we should all plan for the worst every October, and then happily (in a mild winter) simply not plug in the T3 thermocube and C9s.

Barb

No joke... Next year am going to Use heat in my garden. if my Mom likes it or not. Really guys We should prepare for next winter in the summer buting supples for the winter. I have a filling I may have to replant a lot this coming spring.