A TRUE STORY
Nobody asked it to do this.
Some years ago, on a quiet street in Tucson, a bird ate a prickly pear fruit and did what birds do — over a rain gutter. In the desert, a gutter is mostly a rumor about water. It carries dust, roof grit, the occasional leaf. That was the whole offer.
The seed took it.
It rooted in grit, eleven feet off the ground, in a metal trough that bakes to oven temperatures every afternoon from May to September. It gets by on whatever the monsoon spares. Nobody planted it, nobody waters it, and nobody has had the heart to evict it — because year after year, it keeps putting out new pads like it owns the place.
It is, by any reasonable horticultural standard, not supposed to be there. It is doing better than most houseplants you have known.