What happens to the foreskin?
Jewish Law teaches that the foreskin, like any part of the human body, needs to be treated with respect. After the bris, the mohel places the removed foreskin in a small cup of dirt.
Later, the skin is actually buried in the ground, as any body part would be. There is no special blessing said when it is buried. Usually, the mohel will take care of this, unless you request to do it yourself.There is a tradition that the parents can bury their son's foreskin in their yard and plant a small tree seedling at the site. Then, as their son grows, his tree grow with him. If you are interested in this, please mention it to Dr. Katz before the bris.