The Collaborative International Dictionary of English v.0.48:

Florescent \Flo*res"cent\, a. [L. florescens, p. pr. of
   florescere begin to blossom, incho. fr. florere to blossom,
   fr. flos, floris, flower. See Flower.]
   Expanding into flowers; blossoming.
   [1913 Webster]

Moby Thesaurus II by Grady Ward, 1.0:

49 Moby Thesaurus words for "florescent":
   blooming, bloomy, blossoming, budding, burgeoning, crescent,
   developed, efflorescent, floral, floreate, floriate, floriated,
   floricultural, florid, flourishing, flowered, flowering, flowery,
   full-fledged, full-grown, fully developed, garden, growing, grown,
   grown-up, horticultural, hortulan, hypertrophied, in bloom,
   in blossom, in flower, inflorescent, juvenal, juvenescent,
   juvenile, mature, multiflorous, overdeveloped, overgrown,
   radiciflorous, rhizanthous, sprouting, thriving, uniflorous, young,
   youngling, youthful, youthlike, youthy