For this garden you will need:
Cobblestone walls
A hoe
Seeds
First find a area that is flat. Then take the cobblestone walls and use them to outline an area of land. Leave a space so that you can enter your garden. Take the hoe and tap on the grass blocks in your garden.leave an isle in the middle for you to walk down. Then take your seeds and tap on the hoed patches to plant the seeds.Take bonemeal and tap on your crops to make them grow ( optional)