This plant is also referred to as dragon tree. It is also good as an air purifier. This attractive plant is best placed in a brightly lit spot and it should be allowed to get dry before you water it again. Red-Edged Dracaena are excellent at removing trichloroethylene, xylene and formaldehyde from the home. This makes it a healthy choice. The drawback is that this plant is vulnerable to leaf spot when water is spilled on them. Water from the base for the best results.