It should be noted that pteridophyte is a meaningful plant, but not the more the better. If the grave is covered with ferns, it may affect the cleanliness and beauty of the cemetery, and even affect the experience of future generations to sweep the grave. Therefore, when planting bracken, we need to pay attention to the right amount, don't over-plant, and keep the cemetery clean and beautiful.
In a word, it is ok to plant fern on the grave, but attention should be paid to proper planting to keep the cemetery clean and beautiful.