Thanks all! Yes very good info!
(and I do have one of the propane backpacks for work, only its a 10 not a 20! ...useful even in nature; invasive species. I have a smaller 'garden variate' one for my home yard that just uses a camp stove propane tank) Being in the city I will not be lighting the beds on fire, just using the hand held torch to burn off the top layer of stuff.
I fear the grub was the iris borer (likely is)...but am not totally sure. (I took some photos...will have to try to find them) but it was (so far!) confined to one iris.
Thanks for the photos Kent! I think based on that I may just be ok if I get to it this weekend. They have a few inches up this week...its been nice and warm (and last weekend would have been perfect, but alas, live and learn...and I also ran out of time.)
