average cost of peony bridal bouquet
1 On average, peonies can cost anywhere from $2 for a packet of seeds to as much as $3 to $6 or more for each stem. 2  A packet of 500 poppy flower seeds retails for $4 to $7. 3  A Japanese Tree Peony that is in full bloom can retail for $27 to $39 from local nurseries.4  Peonies are a common flower used in various bouquets. For future brides that want to use this flower in a bouquet, the average price can fall between $2 and $5 per stem. 2  For example, the site MyFlowerBuyer.com sells different types of peonies for anywhere from $350 to $425 as a wholesale price.