Summarize this article in one sentence.
Vegetable gardens grow best when they're planted in rows so you have enough space between your plants. Check the specifications on the seeds or vegetables you want to plant to see if they have special spacing requirements. Then mark where you want to place your rows in your garden using stakes so you can easily form them later. The distance between your rows depends on the types of vegetables you plan on growing. For example, broccoli needs at least 30 inches (76cm) between each row so they can grow fully. You don't need to make your rows straight if you don't want to. Use a rake or a garden hoe to push the soil long, raised mounds that are about 8 inches (20cm) tall. Aim to make the base of each row at least 6 inches (15cm) wide so your vegetables' roots have room to grow without being exposed to open air. Continue forming your rows so they have valleys in between them. You don't need to make raised rows if you don't want to, but it ensures that your plants grow in healthy soil The tops of your rows work best if they're level so your vegetables can grow straight down. Use the back of your shovel or hoe to flatten the soil on top of the row without compacting it tightly. Make sure the top of the row is at least 6 inches (15cm) wide so the roots have room to grow and expand. Mulching your garden helps the soil retain water as well as prevents weeds from growing in your garden. Put a 2in (5.1cm) layer of mulch in the valleys between your rows. You can use a standard mulch mix or organic material, such as straw. Don't mulch on top of your rows since it will be difficult for vegetables to grow through it.

Summary:
Plan your garden rows so there's at least 12in (30cm) between them. Rake your garden to form rows that are 810in (2025cm) tall. Level the tops of the rows so they're 68in (1520cm) wide. Mulch between the rows to prevent weeds from forming in your garden.