Can Peonies Grow In Zone 9. Tree peonies stand upright and do not require staking. I just empty the ice cube tray onto the soil above them a few times during the winter if I dont get enough frost.
While all other types of peonies flower best in full sun tree peonies actually prefer growing in dappled shade. Check your hardiness zone here. You might get a bloom that way.
Thereof do peonies grow in Zone 10.
And peony trees grow and bloom here even without the aid of ice cubes. They bloom before the herbaceous peonies April - May and produce incredibly large flowers. Its excellent hardiness 4-9 zones makes it even more attractive. As a result of the big flowers which can boast not many peonies.