Female Moths Listen to Plants

For years, scientists have known that plants vibrate at ultrasonic frequencies when their internal water pressure changes. Recently, they learned that drought-stressed plants or plants that have been cut produce ultrasonic sounds loud enough to be detected by a moth’s ultrasonic hearing. Dr. Yossi Yovel and a team of researchers at Tel Aviv University took this a step further to see whether female moths listen to plants and avoid laying their eggs on those that are distressed.

The researchers found that female Egyptian cotton leafworm moths avoided laying eggs on tomato plants that made distress-related sounds. Unhealthy plants do not allow the moth larvae to thrive. The sounds plants make when they are distressed or unhealthy are outside of the range of human hearing, but insects, bats, and even some small mammals can hear them.

Learning that female moths listen to plants, Professor Yovel speculates on whether “all sorts of animals will make decisions based on the sounds they hear from plants, such as whether to pollinate or hide inside them, or eat the plant.” Taking this even further, Dr. Lilach Hadany, also of Tel Aviv University, speculates on whether plants can pass information to each other through sounds and act on those sounds. “This is an exciting question,” she told BBC News. Previously, researchers learned that plants can communicate with each other through their roots.

The researchers, however, emphasize that plants are not sentient and that this interaction cannot be considered “communication” in the “conservative definition of the term.” Nonetheless, we can look at our own bodies and recall the statement of David in Psalms 139:14, “I praise you because I am fearfully and wonderfully made; your works are wonderful, I know that full well.” Likewise, we see that other forms of life are “fearfully and wonderfully made” as well. Everywhere we look in the natural world, we see evidence of a wonder-working hand that has gone before.

— John N. Clayton © 2025

References: bbc.com and elifesciences.org