If you don t have a suitable hill to place your cactus garden on, choose any spot and decide the shape and size of your garden. Now that you have finished digging, you are ready to begin constructing your garden. First you will need to get outdoor tile blocks or stones to build a wall around your garden. Although the tile blocks come in a variety of styles and are very beautiful, they are also very expensive. If you are willing to foot the expense, these tile blocks can be purchased at garden centers and home improvement stores.
Rocks work just as well and also look beautiful and more natural and are much less expensive.
I suggest using rocks, which you can buy or find yourself. You will also need a strip of plastic equal to the length of the border of your garden. The plastic is optional, but it eliminates weeds and it will save you a lot of time and backaches. Cactus soil is also another necessity. You will need enough to fill your garden to the top of the wall.