I am a zone pusher for sure. It has cost time and money for me to find the ones that work for me but no one outside my little micro-climate in Anchorage. The local botanical garden map even shows it on their maps. Obviously not just my yard, but a small section of western Anchorage. I think it is our proximity to the inlet. I am trying winter sowing this year and have even included vegies to sprout out in jugs. Not sure where that comes in. I guess my reading about plants that take certain things from the soil need other plants that take different stuff and return diff stuff. I wont be raking and pitching this winter, but rather cutting pruning and then trying to intelligently leave the stuff where it might become incorporated into the soil. Not too sure about the brush stuff. That may go into a hole we are trying to fill in.