Timothy Norton wrote:Let me be the one to say, I would not sweat what you are seeing.
If you disturb the mulch, take precautions for breathing in the dust but I would not worry about it once it is placed. I have found cedar/conifer mulches go through an initial white mold phase that weakens their natural anti-fungal oils so other fungi can start processing down the lignin. You might be seeing an initial boom in population but it will settle itself out.
Adam Dylan wrote:I do a Back to Eden style of permaculture and am dealing with large piles of wood chips quite often. I tend to get chip drops several times a year. In my opinion the mold or fungus is a feature not a bug! I want it to do this, and it enriches the soil food web. In my experience the dust is most bothersome in Day 3 to Day 20 or so when any fresh green in the pile is cooking down and the pile is steaming. It does bother me so if it's bad I wear a dust mask while spreading/moving the mulch. Once the pile cools down I notice it's not as bothersome though, your milelage may vary so you kind of need to get a feel for it. Other than that, it sounds like this is primo material to be spreading around your area!