For we know that the whole creation groaneth and travaileth in pain together... Romans 8:22
"In new research, biologists recorded
ultrasonic sounds emitted by 
tomato and tobacco plants inside an
acoustic chamber, and in a greenhouse, while monitoring the plant’s
physiological parameters. They developed machine learning models that
succeeded in identifying the condition of the plants, including
dehydration level and injury, based solely on the emitted sounds. The
frequency of these sounds is too high for human ears to detect, but they
can probably be detectable by other organisms such as insects, mammals,
and possibly other plants.
Plants show significant changes in their phenotypes in response to
stress. They differ visually, with respect to both color and shape, from
unstressed plants.....the ability of plants to emit airborne sounds — that could
potentially be heard by other organisms — has not been sufficiently
explored. Even in a quiet field, there are actually sounds that we don’t hear, and those sounds carry information...There are animals that can hear these sounds, so there is the possibility that a lot of acoustic interaction is occurring.
They stressed the plants via two methods: by not watering them for several days and by cutting their stems.
The plant sounds resembled pops or clicks, and a single stressed plant
emitted around 30-50 of these clicks per hour at frequencies of 40-80
kHz and seemingly random intervals, but unstressed plants emitted far
fewer sounds.
Water-stressed plants began emitting noises before they were visibly
dehydrated, and the frequency of sounds peaked after 5 days with no
water before decreasing again as the plants dried up completely. The
types of sound emitted differed with the cause of stress." SciDaily
