Alt Text: Panel 1: Two women sit in a living room surrounded by plants, drinking coffee. One says "It's true!" Panel 2: She continues, "Plants grow faster when you play them classical music!" Panel 3: The leaves of a potted plant are reaching towards the window "Must... flee... from... this... torture..." Panel: 4: The woman continues, "I even put on classical music when I'm not home." The potted plant in the foreground has a thought bubble that reads, "...kill... me..."
Mythbusters experiments all suffer for low sample size and correlation not being causation. It's a fun show for kids to watch, but has no scientific merit.
I wouldn't say zero scientific merit, but I do agree that some of their conclusions were overly strong. The "plausible" option really helped, rather than everything needing to be confirmed or denied.
I mean, you only need an n of 1 to prove that you shouldn't drive a school bus behind a 747.