The chart below is meant to give you some general guidelines for the most commonly grown vegetables. Of course, if you love peppers but hate cabbage, you can always adjust.
How Much to Plant (for a Family of 4)
Asparagus 10' Perennial
Beets 10' Spring and Fall Crop
Broccoli 5 Plants Cool Season Crop
Brussel Sprouts 5 Plants Cool Season Crop
Beans, Bush 15' Succession Plant
Beans, Pole 3 Poles Single Planting
Cabbage 5 Plants Spring and Fall Crop
Carrots 10' Succession Plant
Cauliflower 5 Plants Spring and Fall Crop
Chard 5 Plants Re-Grows after Harvesting Outer Leaves
Corn 15' Succession Plant and Multiple Varieties
Cucumbers 2 hills Single Planting
Greens 10' Spring and Fall Crop
Kale 5 Plants Single Planting
Lettuce, Leaf 10' Succession Plant
Onions 5' Single Planting
Peas 10' Succession, Spring and Fall
Peppers 3 Plants Single Planting
Radishes 5' Succession Plant
Squash, Summer 2 Hills Single Planting, Multiple Varieties
Tomatos 5 Plants Single Planting, Multiple Varieties
Turnips 10' Spring and Fall Crop