I believe that the decorative plants that are just for hiding, throwing, or otherwise actually be decorative. Should be something Botany can grow. Pots can be made from your favorite material to give it a more artistic flair. Perhaps every department can have 1 hydrophonics tray installed so on down time someone could tend to their own decorative plant.
Perhaps the decorative plants can look dead if not watered so the janitor has something else to maintain.
Allowing more interaction with the crew for the janitor to come around, and water plants for people.
By looking dead I mean. That if not watered they can greyscale, or shrink. I wanted these plants to not truly die just appear dead until watered. It was a simple idea that I thought of.