The Collaborative International Dictionary of English v.0.48:

Fructify \Fruc"ti*fy\ (fr[u^]k"t[i^]*f[imac]), v. i. [F.
   fructifier, L. fructificare; fructus fruit + -ficare (only in
   comp.), akin to L. facere to make. See Fruit, and Fact.]
   To bear fruit. "Causeth the earth to fructify." --Beveridge.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Fructify \Fruc"ti*fy\, v. t. [imp. & p. p. Fructified; p. pr.
   & vb. n. Fructifying.]
   To make fruitful; to render productive; to fertilize; as, to
   fructify the earth.
   [1913 Webster]

WordNet (r) 3.0 (2006):

fructify
    v 1: become productive or fruitful; "The seeds fructified"
    2: make productive or fruitful; "The earth that he fructified"
    3: bear fruit; "the apple trees fructify" [syn: fructify,
       set]

Moby Thesaurus II by Grady Ward, 1.0:

35 Moby Thesaurus words for "fructify":
   be fruitful, be productive, bear, bear fruit, beget, bring forth,
   cross-fertilize, cross-pollen, cross-pollinate, cross-pollinize,
   dress, engender, enrich, fatten, fecundify, fertilize, fruit,
   furnish, get with child, get with young, impregnate, inseminate,
   manure, multiply, pollen, pollinate, pollinize, produce,
   proliferate, prolificate, pullulate, reproduce, spermatize, teem,
   yield