Weaker psychics might emphatically tell you that only people have feelings. Yet, the strongest psychics that I know say that they sense feelings from a lot of things (plants, animals, etc). Some say that they can even sense life that is not on this planet.
Just how different is our brain from plant matter? Can't some plants (such as sunflowers and Venus fly traps) move on their own and move in response to stimuli (tracking the sun or snapping shut if a fly hits a trigger on a leaf). If they can move and respond to particular stimuli, it stands to reason that a lot of plants can. Maybe they can signal that they need more water (or need something else?)?
Many cultures, that have studied the spirit world, concluded that many things have spirits. American Indians, East Indians, et al, have studied such things for many years. Some East Indians are convinced of reincarnation.