The invention relates to containers for transplanting plants. It applies the following three principles: 1. Weight for weight, it is better for the plant for its container to be deep and narrow rather than short or flared towards the top; 2. Containers that are flared towards the bottom (like an "inverted" flowerpot) facilitate the detachment of the roots and transplanting to open soil; 3. Containers that can be separated into two truncated cones or pyramids enable the plant to be removed without being pulled on. These containers can comprise two parts 1 and 2 whose upper edges are crenellated so that the raised portions can be fastened, 1 and 2 being secured by means of hooks or Parker screws 4. The invention is applicable to fruit farming, horticulture and mechanised industrial agriculture. In the last of these, which is particularly broad, the use of truncated cones with an elongated elliptical base (narrow flare) or truncated pyramids with an elongated rectanglar base, could lead to a major development for agricultural container manufacture. <IMAGE>