It symbolizes life, hope and immortality. It also symbolizes the poison and death. When in a dream everything is surrounded in snow and cold, or everything is surrounded in barren desert and in these circumstances you see something being green, then it promises life and hope. If it is a green dream, the excess means an overflow of vegetative, instinctive life, which can drown out the rest of the personality. Generally green in dreams symbolizes sensitivity and immaturity and indicates that what we want or project is still immature, therefore it cannot be realized.
Read more about dreaming of Green in other dream meanings interpretations.