This is a good shot of some cold damage that showed up this winter on my native Opuntia sp. and I do mean native as too this county. I do believe this winter damage came from the crazy winter from last season, but now is more visible after another winter.
So...when you see some burn on a trial plant from the south west it may be just as normal as the burn as these native prickly-pear.
Opuntia basilaris, very cold hardy form.
And the new project, as if I need another project. I should finish the ones I already started.lol
I am taking down the siding and putting O.S.B. board up, filling any gaps I find then I will put up house wrap, 1" blue-board and then put back the original siding. Should make my house much cooler in the summer. (west wall)