I already know to let the soil dry out and I already got rid of all the dead foilage and the shroom but what other preventative steps can I take to make sure no more pop up? What is the threat? Is there any??
What kind of soil are you using. Mushrooms are form spores had to come from some where. On a good note they only grow in high nutrient soil. Seen that on Dirty Jobs
Well although it is a fungus I would not worry about it other then the fact it sure must be dark there? Spores got in the manure some how... Google Mushroom spores in the vegetable garden and see what any of the Universities have written on the subject