Wine caps from my experience are pretty darn easy to cultivate without biochar, in a variety of soil conditions. On our property we have had many types of wood chips, alder, maple, and mainly conifer, seasoning for at least ten years, and never seen a single Morel (over quite an area). Last year I mixed biochar under woodchips amongst compost in just one of long beds, and we've gotten four large morels so far this year, over not too large an area. Again, first year adding biochar, possibly more coming, just found a new one today, large too. Definitely seems like has potential for commercial exploration, or at least good way of increasing chances and benefitting plants at same time.
