There are many types of plants that can be used in the Biopod. The type of plants that will work best depends on what type of habitat you wish to have in your Biopod.
Try to find plants that are suitable for the environment or animal that is in your Biopod. The easiest way to find out would be to research the plant you are interested in adding and see if its care needs fit the environment set up in your Biopod.