The element is intended to be placed in a receptacle for the cultivation of at least one plant, and includes:a substantially solid body including a substrate adapted to enable said plant to develop；at least one seed of said plant disposed on the body in at least one seed receiving area；a layer for holding the seed(s) in said receiving area, comprising a dried mineral powder.The holding layer results from drying a deposition of a holding composition including a mineral powder suspended in water.
