Talk with the spirits of those you are planting, but also talk with the faeries in your garden as well. When you've got a good relationship with them, the garen always grows well! A chat with "weeds" may do well, too. My chat with comfrey didn't yield the results I wanted, but then I think the comfrey knew that we were leaving the next year, anyway
Funny you should ask this, because my Feng Shui in the Garden
book has been popping out at me all day. It's by Richard Webster, and it's pretty good, especially to a person like me who is very new at Feng Shui. It goes into great detail, and I know this man has a few "Feng Shui for/in the..." books.
Other than that, when tilling the ground, put your love, blessings, and energy into the soil. When you're on your knees in the soil, pulling weeds or planting, totally get absorbed in it; dirt is like ecstasy in the moment!
Make your own fertilizer and bless it/energize it. My mother used to make "Rose Tea" from my dad's horses' leavings in a garbage can, put that into one of those chemical sprayers (no chemicals previously in it), and her roses were always gorgeous.
That, and if you have a friend with horses, or a local stable, offer to take a truckload of their waste. Nothing better than horse maneur composted a few months and tilled into the soil ^_^
Those are my suggestions ^_^