I swear roadkill cactus has one of the better names out there. I bought a bunch of "Santa Fe Christmas Trees" when they went on sale for 75% off. I knew nothing about the plant. I had to look through a few sources to even figure out what kind of cactus it was. Thankfully, I found a blog about the indignities forced upon plants and discovered that my "Santa Fe Christmas Trees" were roadkill cacti, so named because of their squashed appearance. Nearly all of them were looking pretty darn bad, and I had to cut away tons of patties, fungus, rot, etc. I'm still dealing with it, but there's hope! I have discovered new budding growth on a few of the cacti, so I'm very pleased that I gave these poor things a second chance at life.