Five regulatory genes and six structural genes involved in anthocyanin biosynthesis were isolated based on a trans criptome library from P. suffruticosa‘Luoyang Hong’ petals. Compared with fully opened on-tree flowers in field conditions, in-vase flowers(vase condition of 21–23◦C, 50–60% RH and a 16 h photoperiod with an illumination of ∼40 mol m−2s−1)of P. suffruticosa ‘Luoyang Hong’ at full opening stage show significant color fading with 50.20% greaterlightness, 37.43% less redness and 36.18% lower chroma in non-blotch parts of the middle petals (the 4th to 6th layer petal).