The light in your house determines how your indoor plants fare. The best light, obviously, is found directly in front of the window, and at just 6' away from the window the light intensity falls by 80 percent. The light on either side of the window is also less intense.
Eastern exposures provide less light, and northern exposures the least.
The leaves can grow as long as 9'. If grown outside, they require partial shade and if indoors, indirect light, although they perform best in a southern or western exposure. If grown in a low-light environment, give them less water and fertilizer. Dracaena prefers bright, indirect light but tolerates low-light situations. Purge the soil of salts periodically by running a continuous low-flow steam of water through the pot for 20 to 30 minutes.