talking to plants

Is there any truth to the oft-repeated idea that if you talk to plants and think good thoughts toward them, then they will do better than if you just water them and put them in the sunlight? And that if you curse at them and think angry thoughts at them, they’ll do any worse?

I read when I was a kid that actual studies had been done on this and confirmed it, but I was wondering if anyone here has the skinny.

-Kris

The master speaks on this very subject.

http://www.straightdope.com/classics/a2_108.html