Can tree peonies be successfully grown in Iowa?
Tree peonies (Paeonia suffruticosa) can be successfully grown in the state. Tree peonies perform best in partial to full sun. They require a well-drained, fertile soil. Many varieties are hardy to -25 degrees Fahrenheit. To ensure they survive the winter, encircle the plants with chicken wire or hardware cloth and fill the enclosure with straw, pine needles, or oak leaves in late fall. Tree peonies are actually small-sized shrubs. Plants seldom grow more than 4 to 5 feet tall. Unlike garden peonies, tree peonies have woody stems that do not die back in the fall. Flowers may be single, semi-double or double and are commonly 6 to 8 inches wide. They are also available in a wide range of colors. Flower colors include white, pink and red. However, they are also available in the more unusual colors of yellow, purple and green. Tree peonies grow rather slowly. They often take four or more years to bloom well.
