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Elephant ears have tubers andElephant ears have tubers and you can divide these to start new plants. If the peace plant is a peace lily it grows horizontal roots just under the soil. You can cut and divide some of these for new plants. A hydrangea can be propagated from soft wood cuttings. Cut 4-6 inch lengths of new green stems from the bush. Dip the bottoms of the stems in rooting hormone and plant in small pots. Remove the biggest leaves to encourage root growth. Go to our individual plant pages at http://www.almanac.com/content/plant-guide-flowers-bulbs-roses-shrubs-houseplants to read more about how to care for these plants.