SEATTLE — Peonies are one of the most enduring garden perennials. They produce lush flower displays every spring. These cherished perennials come in a rainbow of colors. You can grow white, yellow, pink, red peonies and several other hues.Click to see full answer. Also asked, can you grow peonies in Washington state?Peonies are best planted in the fall, anytime from late September through early December. If you are purchasing a potted plant in spring or summer, it’s best to leave the plant in its pot until fall before transplanting.Secondly, how do you grow peonies in Oregon? Peonies like to be planted in full sun, but will take a bit of shade. There’s no need to fertilize when planting, but use a tomato or iris fertilizer with the numbers 5-10-10 on the label or bulb fertilizer in spring as they are coming out of the ground and again halfway through the season, Heinke advised. Moreover, how do you grow peonies in pots? Planting peonies in pots/containers requires a very large container with adequate drainage. Be sure the eyes are covered with only one inch to two inches of soil. Water the potted peonies; keep moist – but, let them almost dry out between waterings. Keep potted peonies protected from deep winter freezing.Are ants good for peonies?Peony blossoms open whether or not ants are scrambling all over the flower buds. To a certain extent, ants actually take advantage of the peony flowers, harvesting much nectar from the plants. But the peonies also benefit, in that ants often devour any insects that are attacking the plants.