To see mushrooms in your dream signify unhealthy pleasures and unwise decisions in your waking life. Things that come too quickly have a tendency to disappear just as quick. Learn to appreciate the things you have. Alternatively, mushrooms symbolise growth despite going through some hardship and difficult period.
To dream that you are eating mushrooms represent your leadership ability. You hold a lot of strength and power.
To dream that you are picking or collecting wild mushrooms refers to a potentially harmful situation or relationship. You may be expressing doubt in some new endeavor, relationship or situation.
To dream that mushrooms are growing and multiplying in your mouth refers to negative emotions that are literally growing and expanding in your subconscious. You tend to keep your feelings inside and need to find a productive way to express them before it grows out of control.