There are two main ways to lay out your vegetable garden. One way is to plan on a grid, with rows 12 to 18 inches apart and 6 to 8 feet apart. The other way is to use blocks, which are 2 feet by 2 feet and 2 feet high. The grid method requires measuring and marking out each square, then planting the seeds and seedlings in that square. The block method has you plant the crops in a row, then place a block over each seedling.