Abstract: A modular planting and cultivating container and a revegetation method using such containers. The planting and cultivating container is essentially made up of a rectangular tray having a flat or ribbed bottom and side walls, as well as a body forming a rectangular sleeve removably mounted on and/or in the tray and extending, when mounted, past the upper edges of the side walls of the tray, the container (1) being characterized in that the tray (2) and the sleeve (5) are made from a hollow planar material made up of at least two sheets connected via a bridging structure.