Uh Neil, we have a propane torch that I have used on occasion on weeds too stubborn to come out. I have grounded myself from it right now though. Was out weeding one day and there was an of grass growing in one bed, so I got my trusty torch and promptly started just burning them up, I had cut back a Russian Sage but didn't take the time to get the few dry leaves from inside the crown and they caught fire and my poor Russian Sage.......... Took my shoe off to stamp out the fire and put the thing away. Surprisingly, the Russian Sage seems to be leafing out after all so I guess it didn't burn too much. But still I am putting myself on a time-out from the torch till May 1st.
I can be so hopeless sometimes
