'Peonies are slow-growing plants and they require considerable patience when it comes to rooting,' says Oliver Hill. 'Depending on the method you use, it can take anywhere from several weeks to several months for a peony cutting to root.' There are some things you can do to encourage root growth, such as dipping the cuttings in a rooting hormone powder. It's also important that peony cuttings have a moist, warm environment to grow in, so if the weather conditions aren't ideal, wrap a plastic bag around the plant to create a greenhouse effect. 'Peonies will actually establish a vigorous root system after two years, and they’ll usually flower the first year,' explains Fiona Jenkins, Gardening Expert, MyJobQuote. 'In the second year, they will increase in flower and plant size.' Given how long peonies take to root from seed, it's no wonder that patience is needed when learning how to propagate peonies from cuttings.