Transcriptional repressor that regulates multiple aspects of plant growth and development through the regulation of BEL1-LIKE (BLH) and KNOX TALE (KNAT) homeodomain transcription factors. Interacts with KNAT1 and KNAT7. Expressed in roots, shoots, rosette and cauline leaves, stems, flower buds and siliques. Plants over-expressing OFP6 show flat, thick and cyan leaves, and enhanced apical dormancy.