A hazelnut tree in a dream represents a mature and a strong person, while its fruit represents money. However, throwing hazelnut at someone in a dream means stoning him to death. (See Hazelnut | Stoning)
Dream dictionary: Hazelnut tree dream meanings
…In a dream, hazelnut represents a stranger who is rich, generous but dull, unpleasant though he has the ability to bring people together. It is also interpreted as hard earned money. In general, nuts in a dream represent roar, or even melancholy. Ahazelnut in adream also means news that one’s homeland is ravaged by war and its children are taken prisoners. In a dream, a hazelnut also represents the marriage of the first born girl to an unknown person. (Also see Hazelnut tree)…