A weed-mower head applicable to a vehicle (V) for weeding the areas (B, B') on the edges of a forwarding surface (R) thereof bounded by boundary elements against which the weed- mower head is susceptible to impact, comprising: a support shaft (10) defining a longitudinal axis (X) mutually connectable with motor means (M) to rotate thereabout, a plurality of working wires (20) which are susceptible to be radially arranged with respect to the axis (X) upon rotation of the shaft (10) and a plurality of disc-shaped modules (30) coaxially coupled with the shaft (10) and side-by-side flanked each other along the axis (X), each module (30) internally including at least one of the working wires (20). The modules (30) are mutually engageable to form a substantially unitary tubular body (40) susceptible to integrally rotating with the shaft (10), the modules (30) being mutually disengageable to allow a user to selectively access to one thereof to act on the corresponding at least one working wire (20).
