Can a plant be knocked out by anesthesia?

Nature · Published 21 October 2026 Swipe more like this →

In short: If you put a Mimosa pudica plant into a chamber with diethyl ether, it stops reacting to touch. This behavior suggests that plants might possess a state of awareness that can be suppressed, challenging the idea that consciousness requires a brain.

The study of plant intelligence explores whether thought is strictly confined to neurons or if it exists in more abstract, expansive forms. Researchers are currently investigating how plants respond to physical stimuli like sound—which they experience as vibration—and touch. While these responses are often viewed as simple biological reactions, a growing cluster of botanists argues that these behaviors may actually be signs of intelligence and potentially even consciousness.

One of the most striking pieces of evidence comes from experiments involving the Mimosa pudica, commonly known as the 'touch-me-not' plant. When touched, this species typically folds its leaves in a rapid movement. However, when exposed to anesthetics such as diethyl ether or lidocaine (applied to the roots), the plant ceases this reaction. Researchers have observed that these substances also suppress the waves of electrical activity that normally spread through the plant's tissues.

While these ideas remain controversial and tentative, they prompt significant questions about whether sentience requires a central nervous system. If plants possess a subjective internal experience, it could fundamentally disrupt our understanding of the human mind and our ethical attitudes toward the botanical world.

The field is currently navigating a transition from viewing plants as passive organisms to active participants in complex behaviors. By examining mycelial networks and distress signaling, scientists are looking for evidence of 'unthought' processes—intelligence that operates without traditional cognitive structures.

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