Here is a fantastic overview of what to plant if you are looking to grow vegetables that will enhance your vitamin and mineral intake.
The following listing contains major plant sources of important garden essential vitamins and minerals. The information is approximate: It’s impossible to assign an exact nutrient value to a crop, since growing and eating conditions vary widely. Not all the scientific test results agree, either. Nor does everyone agree that the government’s RDA (Recommended Daily Allowance) of each vitamin and mineral is appropriate. The lists below are generally in descending order — the higher a food is in a list, the more of that nutrient it contains. Where I found specific values for certain crops, I added them in parentheses (figures refer to one cup of the food unless otherwise noted.) The abbreviations IU, mgs, and DGLVs stand for international units, milligrams and dark green leafy vegetables, respectively.
Read more on how to do this, here: