Peony 'Karl Rosenfield' Characteristics
'Karl Rosenfield' are popular and showy perennials. Young plants or new growth needs more water than established or fully grown plants. Individual plants have a short growing season, lasting only one to two weeks. To extend the blooming season, plant multiple varieties of peony together with slightly different blooming seasons. Deadhead spent flowers to improve the overall appearance of the plant. At the first heavy frost, cut the foliage to the ground as the plant will soon die back to the ground. The roots prefer a cold winter dormancy. Cover the roots with mulch in winter.
'Karl Rosenfield' are hardy perennials that are rarely disturbed by insects or disease. Powdery mildew and ants may be found on the leaves but are not harmful. The most common issue with peonies is lack of blooming. This may happen due to the bulbs being planted too deep or to shallow, too much shade, a late frost, or a plant that has recently been moved.