If you're going to start from seed outside, and your soil isn't the best, you may need a gentle fertilizer. If the plants are going to need a good soak, water them with plain water first, and then apply the mix on top.
Mr Natural420's Baby Food
Into twenty gallons of water mix:
1 pint wormcasting tea (gentle ferts)
half a bottle of Guiness Stout (enzymes)
1 cup corn syrup (sugar for the good bugs)
1 cup of non-fluoride mouthwash (protects seedlings from damping off)
1/2 cup Ivory dish soap (breaks surface tension)