I've grown exotic indoor plants from cuttings, not from seeds. The cuttings start out as 4-6 inch stems, placed in water, that take root. Once the roots are long enough, the cuttings are transferred to a pot. I have plants that are 8-10 years old that came from a cutting. One is about 6 feet long, a combination of 5 hanging plants and one Spineless Yucca placed in the center of the hanging plants. It has turned out to be a very exotic looking plant, but it's not from seeds, and it lives indoors.