Probably not.
A 2007 study in South Korea in rice fields showed that sounds at 125Hz and 250Hz made genes rbcS and Ald, that are known to respond to light, more active whereas sound waves at 50HZ made these genes less active.
Some Country Music might be gentle enough to appeal to plants, but most is just too obnoxious. Studies confirm that plants prefer Classical Music like "Moonlight Sonata"
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Old Answer: (While correct in saying no, is incorrect in saying it's a rumor. This is an example of an answer given without proper research)
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No, its a rumour, all you need is plenty of water and sunlight - not too much water though.
plants like country music better so YES.
See related questions below
Water helps plants grow
No because light and water makes plants grow. (You need to go back to 1st grade)
It helps plants to grow when planted It helps plants to grow when planted
yes it helps the plants to grow thats why it is used in fertilizers
the sun helps the plants grow because the sun gives them energy
Music has been shown to help spider plants grow quite a bit. They are known as social plants, so conversations and music have been shown to help them grow.
Photosynthesis helps plants grow by using energy from then sun.
No plants want grow if they don't have sunlight at all.
H2O, hydrogen and oxygen are what is in water that helps plants grow. Without these nutrients a plant will die.
Epiphytic and parasitic plants grow on plants. It helps support the host plant.