If you want a simple and easy way to do a little organic gardening then building a Keyhole Garden might just be the solution for you. These gardens are designed to hold the nutrients and water in the soil and this creates wonderful plants and flowers. Dr. Deb Tolman in Texas i san expert at building Keyhole Gardens and in this video she shares her technique so anyone can replicate it. The key ingredient is cardboard which might come as a surprise to many but you’ll see why once you watch Dr. Tolman. Another advantage of these gardens is they are raised so it’s less stressful on your back to access the plants and vegetables.