explain the literal and figurative significance of milk and the chokecherry tree? (prt1:chp1)

Trees are a constant healing and comfort motif through the story. Denver turns the scars on Sethe's back into the beauty of a chokecherry tree. She imposes beauty on a what was once the scars of violence and brutality. Mother's milk serves as a nurturing motif. It serves as an organic bond between mother and child.