You can make a new garden in a few hours with minimal work and no digging! This is the preparation for a block of four beds on some very rough ground which has not been cultivated for over 20 years. The top growth was removed, the soil loosened with a fork and the edging frames placed onto the soil.
Do not be tempted use weed killer of any kind if you want to grow food free of chemical residues. Chemicals can remain in the soil and affect the growth of your plants.