Take stem tip cuttings about 6 inches long from healthy devil's ivy stems, making the cut with a sharp knife at least an inch below a leaf. Alternatively, cut a whole stem into sections that each include a leaf. Make each cut half an inch above the leaf. When planted, each section will produce a new plant from the eye or node in the leaf axil.
Plant your devil's ivy cuttings immediately in moist, peat-based compost. Cover the container with a transparent plastic bag supported by a cane and held in place with an elastic band. Keep on a bright windowsill in a warm room. Cuttings root fastest at a temperature of 80 degrees Fahrenheit. Devil's ivy cuttings root in three to four weeks.
Remove the plastic bag when your cuttings start to produce new growth. Keep the cuttings in a bright location, such as a west-facing window that receives indirect sunshine. Pothos plants thrive at temperatures of between 70 and 90 F with minimum night temperatures of 62 F. Keep the soil moist at all times. Repot into individual 4-inch pots once they have produced two new leaves. Alternatively, plant several cuttings in a larger pot or a hanging basket.
Water your devil's ivy as soon as the surface of its soil dries out. Empty any overflow from the plant's saucer -- never leave them standing in water. Fertilize every two weeks during the warmer months of the year with a liquid houseplant fertilizer diluted by 50 percent. Keep Devil's ivy pots on a dish of damp gravel and mist daily to increase humidity levels. Plants produce larger leaves if provided with a moss-covered pole to climb.