preceded by preceded_by floral organ differentiation stage PO_GIT:546 PO:0007600 plant_structure_development_stage stage 6-12 flower in Arabidopsis (related) A floral organ formation stage (PO:0025585) which begins with the differentiation of floral organs (PO:0025395) from the floral organ primordium (PO:0025477) and ends with the beginning of the flowering stage (PO:0007616). PMID:2152125 3 floral organ development stages (related) During this stage, the process of floral organ development (GO:0048437) occurs, defined as the process whose specific outcome is the progression of the floral organ over time, from its formation to the mature structure. floral organ primordium development stage floral organ formation stage