It has been damp this year, so mushrooms in the yard are not exactly a surprise. But I was a bit taken aback by the number and size of some of these mushrooms that appeared recently near our ash tree in the backyard. The tree is one of my favorites, but its branches were getting a little too close to the house, so we recently had it trimmed up. The mushrooms appeared about 10 days after the trimming.
After a little checking around, I figured out the mushrooms are probably ash tree boletes (Boletinellus merulioides), which are commonly found near ash trees. According to Wikipedia, the fungus that causes the mushroom has a beneficial relationship with an aphid that commonly inhabits ash trees. I’ve had the ash tree for the 13 years we have lived in this house and it’s generally seemed healthy. I’m not sure if the tree trimming or the damp weather (or both0 led to their appearance, but I’m inclined to just let it go and see what happens next year.
Has anyone else seen the ash tree boletes? What mushrooms are you seeing in your garden?