Last winter I bought a
Trumpet Royale mushroom kit. It was doing fine and the mushrooms were very good right up to the point that a fly got in the kit and walked all over it. It was just a couple of days later that mold started growing all over it. I tried cutting out the mold but it just kept coming back and appeared to be killing the Trumpet Royales. I gave up and dug a hole beside a dead stump in the only unfrozen ground I could find and buried the kit. I watched all spring and summer for signs of life but nothing came up. Recently we had some good rains and much cooler weather. I checked the spot a couple of days ago and one mushroom had finally come up. Unfortunately something found the mushroom before I did. I suspect a vole but don't have any way of knowing.
The mushroom was 3 1/4" in diameter.