In the world of dreams the rules of reality do not necessarily apply. Each dream is unique and it's a direct link to the soul and spirit. Psychology provides its own theories on what dreams mean, but so did tradition and the study of dreams for thousands of years before any relevant science had developed.
Dream Meanings - Apple
An apple tree full of apples represents happiness and joy, but if it has no fruit you will receive distressing news. To hold red apples means you will have success in your love life but if they are unripe or green then expect disappointment and distress in your private life.