To provide an urn which can facilitate afforested burial.

Inside the urn 1, a seedling housing part 104 and a bone housing part 130 partitioned by a partition part 11 are provided. A planting opening 100 for planting the seedling of a plant and a side surface opening 102 for the roots of the plant to creep out are provided on the outer wall of the seedling housing part 104, and the seedling of the plant is planted in the seedling housing part 104. Further, the partition part 11 for partitioning the seedling housing part 104 and the bone housing part 130 includes a spontaneously decomposing material such as wood, is decomposed by bacteria or the like after the burial of the urn 1, and is turned to the nutrient of the plant.