Take wheat for example early humans cultivated it for food sources. This created a running food source for later humans. The human relationship to plants is now almost reversed. Human intervention is still helpful and beneficial. The problem is there is a much greater demand for food and so humans have been forced to use fertilizers and other possibly harmful product on plants.
Some plants are now dependent on certain fertilizers to sustain proper growth.
Humans are not helping plants as much as we are hindering them. We know music affects humans in different ways. Even certain types of music evoke different actions. Ever noticed that at Kroger the music is always 60 s and 70 s hits. This triggers the Kroger target buyers, 30-60 year old persons, memories and makes them slow down to enjoy the music.