
(Beth Clifton collage)
by Karen Davis, PhD, president of United Poultry Concerns
Can a tree be “strategically responsive, and exhibit kinship, or a sense of self? Is a tree intelligent?”
––Rebecca Giggs, “The Trees Are Talking,” The Atlantic, July /August 2021, published online as A Better Way to Look at Trees.
This intriguing article in The Atlantic recounts modern discoveries of behavioral complexity in plants and the implications of this complexity. Reading it, I was reminded of my conversations with two different people about the possibility of plant consciousness.

Norm Phelps. (Beth Clifton collage)
Sentience & the case for animal rights
If plants can be scientifically shown to experience themselves and their surroundings with their own forms of biological consciousness and sensitivity, how does this discovery affect the case for animal rights, based on animal sentience?
My first conversation was with animal rights activist and author Norm Phelps (1939-2014) who, while believing that the world is informed with a Buddhist-like spirituality, did not believe that plants – trees, bushes, vines, grasses, etc. – possess consciousness or sentience of any kind.
Yes, like animals, Norm acknowledged, plants have DNA and are organic like animals, but unlike animals they cannot run away from predators and they lack a brain and a central nervous system.
(See Norm Phelps, 75, spiritual mentor to the animal rights movement.)
As Giggs writes in “The Trees Are Talking,” “The notion that plants ‘do’ anything, outside of surging toward the light and siphoning water, would imply threshold competencies that have long been regarded as mental, or at the very least sensory.”

Karen Davis & friends.
(United Poultry Concerns photo)
“A welter of universal pain & pleasure”?
There is an understandable concern among animal advocates that if plants can be shown to be conscious, sentient beings, the case for animal rights collapses into a welter of universal pain and pleasure, making it hard to argue that we should not harm and kill other animals since they, like us and unlike plants, have well-developed central nervous systems, pain receptors and pleasure centers.
Like us, birds, fish, and our fellow mammals show evidence of fear and wellbeing. Land animals – mammals and birds – cry out in pain; birds, fish, and mammals nurse wounded body parts, and seek to avoid those who have hurt them in the past.
Thus, whatever sensory experience plants may or may not have, there is no question about the sensory experience of animals, be they chickens or chimpanzees, underwater dwellers or insects, whose sentience is increasingly recognized.

(Beth Clifton collage)
“A newborn lamb & a ripe tomato”
Helen Nearing (1904-1995), vegetarian peace activist and coauthor with her husband Scott of Living the Good Life, said that we may assume a degree of sentience in plants and still recognize that there’s “clearly a distinction between a newborn baby lamb and a newly ripened tomato.”
My second conversation, more recently, was with a person who cares about animals, though not about animal “rights” per se.
Our conversation began by his saying he looked forward to visiting a friend with a fishing business and to fishing with his friend. I asked how he felt about hooking a fish painfully in the mouth and yanking the fish out of the water that a fish needs in order to breathe. For the fish, fishing is a mental and physical trauma involving pain, fear, injury, and a slow and terrifying asphyxiation comparable to our being hooked in the mouth and drowned.
He replied that pretty soon plants will probably be shown to feel pain and suffering similar to pain and suffering in animals; if this is so, we will be just as guilty for hurting and killing plants as for hurting and killing animals, including fish.
I said I agree that we should refrain from assuming that plants have no experiential equivalent of what we know in our own lives as feelings. Even if plants don’t experience pain and pleasure in our sense. this does not necessarily exclude experiences particular to plants that involve their sense of themselves and the relevant parts of their environment.

(Beth Clifton photo)
“Experience” may comprise more than we know
“Experience” may comprise more than we know. Surely all organic beings, be they plants or animals, have an experiential component that distinguishes all of us from inanimate objects.
The fishing discussed in our conversation was not “survival” fishing, but rather “recreational” fishing, including “catch and release” fishing, which is profoundly cruel to the victim whose trauma is maximized by being returned to the water with mouth and facial injuries as well as brain damage from the lack of oxygen the fish endured when swung at the end of a pole into the air.
Back in the water, the injured fish is no longer fit to defend herself or himself from predators and other dangers, as before. A lingering injury to the body and mind of the fish, inviting infection, may follow. The damaged fish may have an aquatic family that he or she can no longer protect or participate with.

(Beth Clifton collage)
Lack of facial expression
The premier advocacy organization for aquatic animals, Fish Feel, cites the following:
In his book Pleasurable Kingdom: Animals and the Nature of Feeling Good, world-renowned animal behaviorist Jonathan Balcombe, PhD., explains how fish are falsely, yet “commonly denied feeling” perhaps because of “their relative lack of facial expression.” He states:
“When they are impaled on a hook, fish don’t scream or grimace, though their gaping mouths may evoke a look of shock or horror to the empathetic witness. Using facial expression as a guide for sentience is hardly valid when one considers that some of the most intelligent and highly sentient marine vertebrates – namely the dolphins and whales – also lack facial expression, at least any that most of us can readily detect. However, animals have many other ways of visually signaling their feelings. Crests, dewlaps, pupil dilation and contraction, color changes, and body postures and movements are among the many visual ways fish and other animals convey emotions. Water is also a potent medium for communicating via chemicals and sounds.”

(Beth Clifton collage)
“Morally untenable & devoid of empathy”
The idea that if plants have feelings, we may therefore harm and kill animals for our appetites and amusement, since sentience is no longer considered a feature unique to animals, but a trait inherent in life itself, is morally untenable and devoid of empathy for either plants or animals.
People who argue against animal rights by invoking the “suffering” of a carrot in being pulled from the ground and eaten tend to be less concerned about plant sensitivity than they are about asserting their right to exploit animals, armed with the notion that if all living things have feelings, then “All is permitted.”
For those of us who truly care about not harming plants needlessly, it helps to remember that when we eat animal products, we consume many more plants indirectly than when we eat plants directly, because farmed animals are fed huge quantities of grasses, grains, and seeds to be converted into meat, milk, and eggs. An animal-free diet causes fewer beings to suffer and die for us.
Surely, we should treat trees and other forms of plant life with respect, and not wantonly, whether or not they are conscious and sentient as we experience these attributes.

Honey bee drinking nectar from a blackberry flower. (Beth Clifton photo)
One million neurons in a bee brain
In “The Trees Are Talking,” we are introduced to “a new vision of tree life. . . . This newfound tree is networked, sensitive, companionate, and communicative; it matters as part of a conjoined whole. . . . Such findings make trees seem capable of so much more than we once imagined.”
Similarly, oysters, clams, and insects are being shown to be capable of much more than we once imagined. Like fishes, they are members of the animal kingdom. As such, they deserve the benefit of the doubt. Their behavior indicates sentience and awareness even if the sources of their feelings are elusive to science, which apparently is not even the case anymore.
Neuroscientist Lori Marino points out, for example, that there are “close to one million neurons in an ant or bee brain.” All insects, she writes, “possess a complex central nervous system . . and many insects show very complex learning capacities. . . . [and] we found that fish and crustaceans feel pain when it was assumed that was just not possible for ‘simple’ organisms.”

(Beth Clifton collage)
Perception of pain is not the only proof of sentience
We are reminded that there may be ways of feeling being alive in the flesh, even in wooden “flesh,” that we will never fathom. Nor is the perception of pain per se the only proof or sine qua non – an indispensable condition – of sentience.
Conscious perception of non-painful but highly distressing stimuli includes gagging, inability to breathe (dyspnea), smell of blood, apprehension, fear and more. Throughout history, various groups of humans, birds and others have been dismissed as mindless and insentient or “low on the scale of evolution,” as was once assumed about ground-nesting birds such as chickens, until the truth showed otherwise.

Karen Davis and friend
(Beth Clifton collage)
Thus, even if Buddhism does not regard plants as sentient or possessed of awareness, and therefore in no need of the compassion we owe to animals “not to kill or injure any human, animal, bird, fish, or insect,” we can no longer rely on this assumption, any more than on the Biblical claim in Matthew 6:28 that the lilies of the field “neither toil nor spin.”
With our newer insights into plant life and ecology, it appears that in their own evolved ways, this is precisely what “the lilies” do, just like animals, just like us. Taken together, we, the plants and our animal kin are the conjoined family of life on earth.
(For more on this topic, see Don’t Plants Have Feelings Too? Responding Effectively to 13 Frequently Asked Questions About Food, Fiber, Farm Animals, and the Ethics of Diet.)

(Beth Clifton collage)
Editor’s note:
Upon receiving Karen Davis’ guest column, above, ANIMALS 24-7 mentioned to her that the most basic, fundamental difference between plants and animals is that animals, from microbes on up, strive to escape being eaten, while plants have evolved a system of reproduction which often relies for reproduction on the process of being partially eaten.
This occurs in two ways.
One is that plants have evolved edible parts and secretions which attract pollinating species such as bats, birds, and insects, who transfer their pollen to other plants of the same species, thereby making sexual reproduction much more efficient.
The other is that many plants (including many of the same plants) have evolved edible parts which contain their ready-to-grow seed.

Beth & Merritt Clifton demonstrate the difference between animals & plants.
(Beth Clifton collage)
The edible parts attract consumption by animals, who then poop out the seeds in new locations, with dung which becomes the fertilizer to give the seeds a head start in life. This system enables plants to much more rapidly expand into new habitat than they otherwise could.
To be eaten by a predator is, for an animal, the end of that animal’s reproductive potential.
By contrast, for a plant the experience of being eaten is often the beginning of realizing reproductive potential.
Responded Karen Davis, “With these thoughts in mind, I will eat and urge others to Eat More Plants!”
“Intelligent Trees”:
When an individual who happily and mindlessly eats meat, eggs, and dairy starts telling me that vegans eat plants and therefore eating animals is just fine, I always know I am looking at a person who has limited or no ability to feel empathy for the suffering of others and is using rationalization and a
pseudo interest in plants to justify his/her behavior.
What plants actually are capable of experiencing is a separate matter.
Thank you, Karen, and Merritt and Beth. Yes, we should respect plants as fellow living organisms that can suffer, even if not consciously. It should be plainly apparent to any sensible person, though, that animals can consciously suffer fear and pain, and they can enjoy pleasure.
Despite how sorely lacking society tends to be in understanding of nonhuman animals and respect for them, even the law recognized this difference between plants and animals in that there are anti-cruelty laws against harming animals (albeit woefully inadequate ones) but not against harming plants.
It’s truly astounding that there are so many people who genuinely don’t seem to grasp the difference between harming a plant and harming an animal. It’s scary to think they’re walking around loose out there!
Even if they do believe plants can consciously suffer, as noted in the article, we harm far fewer plants by opting for a vegan diet due to the great inefficiency of converting plants into flesh, milk or eggs. There is also the immense pollution that animal agriculture/fishing/animal consumption generates, which harms countless plants and animals.
Thank you very much for publishing my article, “If Trees Have Feelings . . .”
I appreciate your interesting thoughts about how plants have evolved their own methods of self-protection from predators, to compensate for not being able to “run away” from harm.
One thing is clear, and that is the astonishing complexity and interconnectedness of all living beings, of plants and animals together.
Karen Davis, PhD, President, United Poultry Concerns.www.upc-online.org
Getting “a good-ol-boy” to empathize with creatures at our mercy may take a brutal experience, in Compassion Part II – Empathy, a “short ‘Twilight Zone’ style film” by Corpening Media:
Respecting others and treating them kindly was a central life lesson for me, and it’s one I try to apply always, whether I am dealing with a human, another animal, or, yes, a plant. As a spiritual being and a living being, I know we have to eat something in order to survive, and we were put here TO survive. Eating as low on the food chain as possible is important to me for many reasons, ethically, morally, ecologically, logically, and for my own health. But I have a high regard for the plants in my care, and I strive to take good care of them.
Sharing to socials with gratitude. There’s a lot of food for thought there for those who DO think.
*IF* plants HAD feelings, how WOULD this affect our advocacy for animals?
That plants do feel is about as improbable as it is that animals (including humans) do not feel. (The only real uncertainty is about the very lowest invertebrates and microbes, at the juncture with plants, and evidence suggests that the capacity to feel depends on having a nervous system, and the behavioral capacities the nervous system produces.)
Because animals feel, it is unethical to harm them, when we have a choice. We don’t need to eat animals to survive and be healthy, so there we have a choice.
Plants almost certainly do not feel, but even if they did feel, we would have no choice but to eat them (until we can synthesize them) because otherwise we die.
I agree. What’s more, if plants did have feelings (and emotions, capable of experiencing terror and surprise), they would mourn the loss of loved ones! We know for a fact that many, many animal species grieve and mourn for the loss of loved ones–just like humans. Imagine, “oppressed” people offended for being compared to plants when crops are harvested. They never cry “They treated us like tomatoes!”
“…a Neapolitan peasant, having learned from his parish priest that animals are not ‘moral persons,’ can go home after Mass and with a clear conscience give his donkey a thorough taste of the switch.” — “Men, Beasts, and Gods – A History of Cruelty and Kindness to Animals” — Gerald Carson (1972) p. 17
The reflection that the lower [sic] creatures suffered, although innocent, troubled many consciences. But the official dogma stood firm that brutes had neither personality, “intellective soul” nor future life. Their place in the universe was fixed forever in Genesis 1:38, that they live and died for the convenience of man. As late as the middle of the last century, Pius IX refused permission for the formation in Rome of a society for the prevention of cruelty to animals on the grounds that it was a theological error to suppose that man had any duty toward animals…. p. 24
And echoes of the animal-machine idea occur in a statement made by Pius XII to the effect that when the lower [sic] animals are killed in a laboratory or an abattoir, ***“their cries should not arouse unreasonable compassion any more than do red-hot metals undergoing the blows of the hammer, seeds soiling underground, branches crackling when they are pruned, grain that is surrendered to the harvester; wheat being ground by the milling machine.*** ” All of these groups, commercial, vivisectionist, and ecclesiastical, are quick to raise the cry of sentimentality when any attempt is made to consider the mental or emotional life of subhuman creatures. P. 41
This is from my CATHOLIC high-school freshman Gregor Mendel Edition of “MODERN BIOLOGY” textbook. The Foreword makes it explicitly clear that this is a creationist/faith-based edition. There’s a chart drawn showing “GOD the CREATOR” in a box at the very top of the chart. The next box under God reads “CREATURES,” from which two other boxes stem, entitled “MATTER” and “SPIRIT,” respectively. Under the “MATTER” box stem boxes for the mineral and vegetable “kingdoms,” as well as a box entitled “ANIMAL ‘KINGDOM’.” (SO ANIMALS ARE PLACED WITH VEGETABLES AND MINERALS, LIKE ORDINARY RESOURCES, AS IF THEY WERE NOT CONSCIOUS, THINKING, FEELING, CARING, SOCIALLY-AWARE INDIVIDUAL BEINGS WHOSE LIVES MATTER TO THEM!) Finally, under the “SPIRIT” box, however, is a box reserved exclusively for humans and angels.
If shown a pig embryo and a human embryo well into a month, would the “pro-life” folks know which one to take into account? Do unborn baby animals suffer while their pregnant mothers are being slaughtered in a slaughterhouse?
Leave it to Catholic Church dogma to corrupt people’s moral values. “Ah, the faithful. The sheep who need the shepherd to stay safe in the pasture of dogma.”
Animals are stripped of moral standing and denied rights, while the self-exalted species with every conceivable right suffers least than every other sentient species.
I am quite prepared to believe that plants are conscious and feel pain. While, it’s impossible to live on this planet and cause no harm to fellow living beings, we can hugely minimize the suffering we cause through our conscious choices. Unlike plants, or, (to address the other argument people make against veganism) animals in the wild that humans once killed for food out of necessity, animals farmed as food suffer their entire lives, not just at the time of their deaths. We cause much less suffering by eating a vegan diet, not only because it causes fewer plants to be killed, but because it spares animals entire lifetimes of unnatural physical and mental torture. I will confess that more than twenty years ago, before I became a vegan, I used the pant argument to justify my eating animals. I only had to see one undercover farm investigation to become vegan overnight. Such abstract philosophical arguments are divorced from the reality of what animals endure for our momentary pleasure, and I think most people who make them have no mental picture of what animal agriculture and commercial fishing entail. That’s why I try to avoid discussing veganism in the abstract. I prefer to just do pay-per-views.
This one one of the most common arguments I heard in my teens-early 20s. “Oh the poor plants you’re eating. How they suffer.” I heard it constantly. There was even a punk song that mockingly called out vegetarians’ abuse of vegetables. At the time, I tried to reply as if this argument was being made seriously. Stuff about nervous systems, what would be the purpose of non-mobile organisms evolving pain receptors, meat-based diets destroy more plant life than veg ones, etc. This simply caused more laughter.
Finally, I wised up and realized that no omnivore actually makes this argument with any kind of seriousness. It is, pure and simple, a desperate attempt to take the spotlight off of their own actions and redirect it onto the vegan. In the ensuring conversation, what happens to animals completely disappears, and the omni no longer has to have any uncomfortable thoughts about what they’re having for dinner.
So instead, if a defensive person starts making accusations of plant sentience, challenge them directly:
“So if your house was on fire, would you be OK with the firefighters not saving your dog, as long as they rescued your houseplant?”
“So you’re telling me that if you noticed your neighbors pruning their rosebush, you’d react exactly the same was as if you saw them chopping the legs off a live pig?”
We can still value and appreciate plants and trees in our lives—as most vegans absolutely do–while realizing the patent absurdity of the “plant life is just as sentient as animal life” argument and realizing that it is almost 100% of the time never brought up as a serious point of debate.