You wanna know what I do with my garden? I IGNORE IT? LOL!!! Except when I'm singing to my plants... they love that.
I'm not Wiccan so I don't have any goddess energy to feed them. However, that does remind me of a strange little tidbit of knowledge I found many years ago. Apparently, some people give off a hormone or pheromone that makes plants thrive -- I have this, so I touch my plants a lot and they love it -- hence the term green thumb.
But other people give off pheromones that can literally kill plants, and they should try not to touch them too much. I don't know if there's anything to this, but it would explain why some people just don't can't keep plants alive while others have no problems.