Woad-Waxen. See [Genista].
Woodbine. A name properly belonging to climbing Loniceras, but often applied to Ampelopsis, both of which see.
Wormwood, Southernwood (Artemisia Absinthium). Compositæ.
Seeds and division.
Wrightia, Balfouria (Palay or Ivory-tree). Apocynaceæ.
Seeds; usually by cuttings, which root readily in sand in heat.
Xanthoceras. Sapindaceæ.
Usually multiplied by seeds; root-cuttings are sometimes used.
Xanthorhiza, Zanthorhiza. Ranunculaceæ.
Seeds and suckers.