A set for assembling a length and shape adjustable planter comprising (a) a plurality of elongate troughs being length customizable by cutting thereof the elongate troughs having a longitudinal axis and a H-inverted cross section the elongate troughs interconnectable therebetween (b) interconnecting members configured for interconnecting the elongate troughs in series and (c) end members configured for mounting onto a free end of the elongate troughs. A surface of each trough at least partially is provided with a surface profile distributed over a length of the trough. The interconnecting members are securable on the surface profile.