It's easy to start new impatiens plants from cuttings. Rather than digging up your old plants to bring indoors, you?ll have better luck by taking cuttings late in the season to bring inside. Take cuttings 4-?6 inches long. Remove the lower leaves, and place the cuttings in water or moist vermiculite. New roots should form in several weeks. Pot up the rooted cuttings, using a good soilless houseplant potting mix. Grow the plants in bright, indirect light. Expect much less bloom indoors than in the garden. In the spring, wait until warm weather settles in to move the plants outdoors.