Keyhole Beds and Mandala Gardens: Water-Efficient Bed Design

The Keyhole Bed DesignA keyhole bed is a circular raised bed approximately 2m in diameter with a narrow path (the "keyhole") cut into the circle to allow access to the centre. The entire bed can be reached from the surrounding path or from the central access point without stepping into the growing area. In the centre of the bed is a composting basket or pit — organic matter and grey water added to the basket slowly releases nutrients and moisture into the surrounding growing medium.The Central…