The Collaborative International Dictionary of English v.0.48:

Weeding \Weed"ing\,
   a. & n. from Weed, v.
   [1913 Webster]

   Weeding chisel, a tool with a divided chisel-like end, for
      cutting the roots of large weeds under ground.

   Weeding forceps, an instrument for taking up some sorts of
      plants in weeding.

   Weeding fork, a strong, three-pronged fork, used in
      clearing ground of weeds; -- called also weeding iron.


   Weeding hook. Same as Weed hook, under 3d Weed.

   Weeding iron. See Weeding fork, above.

   Weeding tongs. Same as Weeding forceps, above.
      [1913 Webster]