The element (50) is intended to be placed in a container for the cultivation of at least one plant, and comprises: - a substantially solid body (52) comprising a substrate able to allow said plant to develop; - at least one seed (51) of said plant disposed on the body in at least one receiving zone (53) of seeds; - A layer for maintaining the seed or seeds in said receiving zone, comprising a dried mineral powder. The holding layer results from drying a deposit of a holding composition (60) comprising a mineral powder suspended in water.
展开▼