A study found tobacco and tomato plants emit ultrasonic “squeals” when stressed. Microphones 4″ away picked up the sounds when plants had stems cut/were under-watered: an average of 15 – 25 sounds within 1 hr from cutting, and 11 – 35 sounds per hr from drought. – Tiny Fox Lab Facts
Plants Scream in the Face of Stress
Human ears can't hear them, but other plants or animals might.
Jesse, posted on 12/25/2019, 4,449 views