Agave protoamericana
Will be covered in the winter.
Agave parrii "Prescott AZ"
Agave x?
It was bought as A. neomexicana, He said it had to be either A. utahensis or A. neomexicana. The only 2 agave he grew.
So I think it is a x between the two. And also survived the winter that did most of my yuccas in, and it was uncovered throughout the winter.
A. parrii "Prescott AZ"
A. parrii "Flagstaff form"
I have tried this one before with no luck!
Zone 4 plant? Maybe if it gets bigger?
A. havardiana
I have tried these so many times without any luck! Even covered!
I will try again. Zone 5 plant?
Hesperaloe parviflora
I have had very little luck with these! Not as hardy as some say, but I always try with smaller plants.
So I will cover until they get bigger.
Zone 5? Not for me.
"Ocotillo"
Fouquieria slpendens
I have tried before with no luck. This plant may do better, it came from a place that seen -5f. at least!
And yes I will try a keep it covered.
PS. I have seen big plants in full flower in Boise Idaho! Zone 6b/7
Zauschneria garrettii "mountain flame"
Lone coyote