“It’s simple bio-acoustics,” she said as they weeded the beds. “Sound travels very efficiently through soil, and plants can hear everything around them. Bees buzzing, the wind, even their neighbor plants. Plants thrive with peaceful sounds, while sounds of aggression poison them.”
“Like most of your theories,” he said, “that is pure drivel!” Red-faced, huffy and angry, he pushed her aside and walked back into the house.
The next day, all her petunias, roses, daisies and violets were dead.