It is all too easy and too simple to disdain as "superstition" everything one cannot understand, but the ancients themselves knew very well what they meant when they used symbolic language...the Spirit can always come back to breathe fresh life into the symbols and rites and give them back their lost meaning and the fullness of their original virtue.
Flowers have incredible power. Their fragile beauty and brief life can teach us to enjoy without attachment, to experience deeply while knowing full well the experience is temporary. It is the same with all life... On the spiritual path it is not the pleasure we want to renounce, it is the attachment to the pleasure. Life will have its joys and its sorrows; to live fully we must live from the source, without attachment to either pleasure or pain.