Dreams about graves often symbolize reflection on the past, endings, or the idea of transformation. In your dream, standing on a grave might represent a connection to something significant in your life that has come to an end or a need to confront memories or emotions tied to that past.

Planting a seed, like a sweet potato, can signify new beginnings, growth, or the potential for transformation. It suggests that even in the face of endings, there is hope for new life and opportunities. Sweeping out the grave could symbolize a desire to cleanse or release old burdens, making space for new growth in your life.

Overall, this dream may be encouraging you to acknowledge your past while also nurturing new possibilities for the future. Consider what aspects of your life may need closure and what new endeavors you might want to cultivate.