Definitions of vegetative:

• adjective:   used of involuntary bodily functions

  Example: "Vegetative functions such as digestion or growth or circulation"

• adjective:   of or relating to an activity that is passive and monotonous

  Example: "A dull vegetative lifestyle"

• adjective:   (of reproduction) characterized by asexual processes
• adjective:   composed of vegetation or plants

  Example: "The decaying vegetative layer covering a forest floor"