Growth in a dream can be the recognition of a new spiritual maturity, from which we can take heart.
Psychological / emotional perspective: Often when we dream of childhood we are able to put ourselves in touch with the growth process, and can have a sense of growing, usually larger, but sometimes smaller. This can give a strong sense of being very small within the universe or very large and giant-like within the everyday world.
Material aspects: The changes in us that bring about new ways of relating to other people, who we ourselves are or situations around us, are all stages of growth. They can be pictured in dreams as the growth of a plant or something similar.