Exactly Neal.. The torch doesn't work on the perennial weeds like Convolvulus (Bindweed) or any of the Oxalis I have here. It's excellent for Popweed (Utricularia vulgaris), and most annual weeds, especially when you can get them at just the cotyledon stage. Some are tougher than others, and it's been trial and error in learning what it works best on here. I suspect that if I were more diligent, that I could probably weaken the perennials as well, if I could only keep on top of frying their foliage off whenever it sprouted.
