Growing your own vegetables engages you directly with the production of your food. Nurturing something while it grows, then being able to serve the results to friends and family is both fun and rewarding. But to get the most out of your vegetable garden bed, you want soil that has what it takes to grow healthy, luscious plants. While you can prepare your garden bed any time of the year, fall is the best time. Soil prepared in the fall has all winter to absorb any amendments you put in before you plant. Consider it pre-season training for your soil.