If you are asking about building a raised bed garden with side walls that are 10 feet by 10 feet than I suggest you visit a home center store where they can sell you corner brackets and pressure treated wood to make your own bottomless, but wood encased raised bed garden. You can also have a sandy loam and compost delivered to your property and spread it out so that it covers 100 square feet and is mounded above ground by at least six inches but a depth of 12 inches is best. In some climates the soil may be able to sit on top of the ground in a raised bed without sides for a few months while you plant. Than later on in the summer when the sides dry out and start to fall apart you can add stones, landscape block or timbers to shore up the sides. There is also companies that make raised bed gardens and corner brackets that can be ordered online. One company is called Gardeners Supply at gardeners.com. Welcome to raised bed gardening! Keep Growing, Marianne Binetti