Great garden, fantastic plants and wonderful pictures. Great job keeping the polycephalus going in your area! Just curious on your source for plants. I used to work at High Country Gardens and some of your plants look familiar.
I especially also appreciate the Echinocereus X roetteri.
keep those pics comin!
Yes, some have come from H.C.G. like the Echinocereus X roetteri, other like the polycephalus was from a salvage sale from southern Nevada. And a few like all the y.brevifolia and most of the other yuccas I have grown from seeds.
Oh and I can't forget about the plants I get from LaMar (plantasia cactus gardens).
The polycephalus are very hardy from the Northern part of their range, but need to be kept very dry in the winter/very good drainage. If we did not get all this snow in the winter here I bet it would be fine without the plastic cover in the winter. All it has is a thin sheet of plastic protecting it and it has been through 3 winter with below zero weather, but so did my ferocactus as long as it was covered.
P.S. I know most people here know about good drainage and to keep plants dry in winter.