Hi, I have been doing research on the keyhole Garden concept and find it rather interesting and something I want to try. Has anybody ever tried this? Also, when it is layered, how many layers do I need and of what? This part has been vague on the sites I looked at. I have even seen sites that have old clothes layered in. After a couple seasons when everything is decomposed and used up (the layers), would I need to empty it out and refill it again? Any help would be appreciated!
