What is making mushrooms grow in a planter box with peppers?

Question

I made a planter a couple months ago and am growing some peppers in it. There are some mushrooms growing in a couple parts of the box. Does anybody know what's making them grow there, and if it's bad that they are there? Also, should I make sure they don't touch the pepper plants, or especially the peppers themselves?

Answer 1

Excess moisture is helping the mushrooms grow.  Drill a few more holes or whatever you have to do to get the soil a little drier and the mushrooms will give up.  Your Peppers will appreciate not being waterlogged as well.  

Answer 2

It wont harm the peppers, but unless you are sure of the mushrooms don't eat them,(the mushrooms) as they may be poisonous.

Answer 3

next year treat the box with a fungicide  

Answer 4

mmmmm shrooms, do they have a gold top on them, if so, enjoy.

Answer 5

Rotting,damp wood.