All of our gardens over the past 5 years have been built hugelkultur style. Hugelkultur is a raised bed garden filled with logs, sticks, compost, and other organic materials; much the way a forest floor works.
I no longer till any of my gardens.
I rarely weed, and seldom need to water.
I mulch heavily in the fall and spring with leaves, compost, straw, or anything organic that will break down.
Once my planting is done I will mulch once or twice in the summer.
This supplies the soil with lots of nutrients and holds moisture longer so I rarely need to water.
The mulch covering also keeps weeds at bay.
This link illustrates Ruth Stout's method for no till gardening.