Why did Mary Magdalene think Jesus was the gardener?

Les teaches that Mary saw a man standing there and did not know it was Jesus, so she assumed it was the gardener. In the account, she turned and saw Jesus standing but knew not that it was Jesus; He asked why she wept and whom she sought, and she supposed Him to be the gardener. Les points out that a gardener does not look like a ghost or fog but is very human and ordinary. Jesus was likely standing in the pre-dawn semi-darkness. Mary’s last view of Jesus had been on the cross, an awful, disfigured sight—Isaiah says no man was ever so disfigured. In that dim light she saw a normal human being and thought He was the gardener.