Plants may be just one element of Feng Shui; however, they can play a major role in office environments. Plants can buffer noise in an office increasing the amount of privacy felt in open floor plans. Plants, in general are known to make people happy and more creative, although this might be intangible, the extra added health benefits of having plants in an office are not. Plants increase oxygenation and filter out impurities in the air reducing the amount of bacteria and germs that are usually present in any shared environment. Therefore, office spaces with plants statistically have fewer employees that need to take sick leave. See here for 10 peaceful plants for Feng Shui.
When you work in a cubicle type office setting - which means that your office set-up cannot be changed - you have to pay even more attention to creating (and keeping) good energy throughout your day at the office. While you might not be able to move your office desk into a feng shui commanding position or face your lucky feng shui directions, but there are still many ways to improve the energy of your workspace.