We think this must be the only way that a colony of Kniphofia got way out in the Mt. Hood National Forest at about 4000 feet elevation: somebody dumping garden debris. As far as I know, it is not spreading. ----------------------------------------------------------------- What someone will do to avoid maintaining an onsite compost pile. Imagine carrying garden debris in your backpack as you climb a mountain. It's not accidental, like seeds with burrs that are stuck in your plants, and you pull them off and drop them along the path. But maybe it was deliberate. There was someone in southern Oregon or Northern California (?) who flew a small plane and dropped great quantities of seeds over one area.