I’m pretty sure I first encountered the plant called mala mujer in the Santa Rita Mountains south of Tucson around 30 years ago. I had 10 years of commercial horticulture under my belt and I had become a native plant geek. “To heck with all these exotics,” I’d shout to people, “Grow native!” Yes, an obnoxious native plant geek. Anyway, I’m also pretty sure I turned that encounter into a Growing Native episode and I mispronounced the genus Cnidoscolus. “The C is silent,” my botanist/horticulturist friend Gene Joeseph gently told me. Where would I be without friends like that? There…