My wife loves to grow and pick fresh herbs in our courtyard. Blessed with great weather year-round, San Diego has many areas where people can continue to "farm", even in a small space in a small yard. You can produce something that can add to your table fare as well as look great. My wife grows several kinds of mint and basil, parsley, cilantro, shallots, and many other "salad fillers" all the time.
We also have raised planters with fresh strawberries, blueberries, and raspberries growing on the shadier north facing areas and three kinds of rosemary growing on the sunny sloping areas with many varieties of stone fruits and citrus inter planted on the slope. Mango, papaya, and fig trees grow in large pots in the courtyard and a beautiful little kumquat has a special place by the back door (makes a great marmalade). We are just getting our first crop from our Australian Finger Lime which has a wonderful small slender cucumber shaped fruit that when "squished out" renders tender vesicles filled with spherical crystals of plump tender citrusy goodness, reminiscent of citrus caviar that pop as you bite them. You can try fresh citrus salad, oyster garnish, fresh fish sushi, or perhaps even a finger lime gin fizz. The possibilities are endless and the bushy little tree is truly beautiful.
So, what does the president of San Diego's largest nursery operation do with his spare time??? Why garden of course! You should try it, it is great fun!