reforest

from WordNet (r) 3.0 (2006)

reforest
    v 1: forest anew; "After the fire, they reforested the mountain"

from The Collaborative International Dictionary of English v.0.48

Reforest \Re*for"est\, v. t. [imp. & p. p. {Reforested}; p. pr.
   & vb. n. {Reforesting}.]
   To replant with trees; to reafforest; to reforestize.
   [Webster 1913 Suppl.]