The invention relates to an installation comprising movable plant supports, wherein a plant support is provided with a first connecting element, which is to be connected to a second connecting element, which second connecting element is connected to a supply line for supplying liquid. Means are provided for moving the second connecting element with respect to the first connecting element for connecting/disconnecting the two connecting elements to/from each other, wherein at least one of the connecting elements is movable with respect to the plant support, in a direction substantially parallel to the intended direction of movement of the plant support, seen in top plan view of the plant support. Guide means are provided for mutually aligning the connecting elements during movement of the second connecting element towards the first connecting element. <IMAGE>
