There have always been questions about if talking to your plants or playing music for your plants help them grow (check out this UCSB research), and there have been plenty of studies dedicated to finding out if it does. On an episode of Myth Busters, the guys tackled the question, and by the end of the episode, they had determined that playing music for plants, especially heavy metal, do help them grow.
Since the episode aired, some marijuana enthusiasts that grow their own plants have started playing music for their plants in an effort to help them grow faster. While the Myth Busters episode did prove that playing music helped plants to grow, there wasn’t a very solid explanation as to why the music helps them grow.
There was an article published by Science World Report, which provides a good explanation as to why the music helps the plants grow. They found that vibrations, which come from the music, enhance the efficiency of photosynthesis, the process that allows some bacteria and plants to turn sunlight, water, and carbon dioxide into energy and oxygen.
The scientists extracted the photo system II reaction centers, which are located in the chloroplasts of plant cells, and are in a group of pigments and proteins that do the heavy lifting when it comes to photosynthesis, from some leaves. These photo system II reaction centers are also the only natural enzyme known to man that uses solar energy to split water into oxygen and hydrogen.
After extraction, the scientists use sequences of laser pulses that are carefully timed to match the speed of the reactions taking place, allowing them to take real time snapshots of the process. As a result of the experiment, the scientists found out that there were vibrational motions occurring during the charge separation.
According to Jennifer Ogilvie, one of the researchers in the study, when the gaps in the energy levels are close to a vibrational frequency, there is an enhanced charge separation. This discovery essentially explains why music helps plants to grow, because the vibrations are speeding up the process of photosynthesis, it also makes a lot of sense that heavy metal seems to be the most effective, because it probably has the most vibrations of any genre of music, due to the loudness of the instruments they use.
It is still unknown if marijuana plants prefer stone music to regular music, but one thing is for sure; if you want your plants to grow fast, start playing them some music regularly.