Acts redundantly with WOX4 downstream of the TDR/PXY receptor kinase to regulate procambial cell proliferation and differentiation in vascular tissue, independently of any role in vascular (PubMed:23578929). Involved in the regulation of gibberellin (GA) biosynthesis pathway (PubMed:28218997). Regulates positively the expression of the GA biosynthesis gene GA3OX1, and negatively regulates the expression of GA2OX1 during secondary growth, which increases bioactive GA content in the inflorescence stem (PubMed:28218997). Promotes vascular cell differentiation in the inflorescence stem (PubMed:28218997). Transcription factor which may be involved in developmental processes. Expressed in root vasculature, pericycle and stamen (PubMed:18950478). Expressed in the procambium during stem maturation (PubMed:28218997). Retarded growth of the primary root, and partial sterility with aborted and short siliques (PubMed:18950478). Late flowering under long-day conditions (PubMed:18950478, PubMed:28218997). The double mutants wox4 and wox14 exhibit reductions in vascular cell division (PubMed:23578929). Overexpression of WOX14 increases bioactive gibberellin (GA) production and induces radial growth with strong lignification of vascular stem tissues. Belongs to the WUS homeobox family.