Oooh, I thought of another "rescue" I did a few years ago. Along the banks of the Ohio river there are some unique flora to be found. The sandy banks will bake during a drought killing back most plants (especially trees). Two plants that thrive here are Opuntia and Passiflora. One Church lot & graveyard in particular abounds with Opuntia. The caretakers hate it because it's a nuisance and punctures their lawnmower tires. But I wanted some pads badly. Lo & behold on my latest visit the lawn crew had collected a rubbish pile of weeds & debris with abundant Opuntia pads. I felt no guilt in taking pads from the rubbish pile. Sadly it is not thriving in my garden as my other Opuntia do. It must really want that sandy soil. Dennis in Cincinnati