Keyhole gardens appear to be a wonderful idea. I am not certain of whether the science works behind them- but the principle of construction is very simple. The gardens are generally quite small- you build a circular wall- using bricks or rocks or whatever you can find. This area is filled with soil to create a raised bed, in the shape of a keyhole, with a gap to walk in to the middle. In the centre is a hole, to ground level, which enables you to literally 'feed' the soil of your garden with organic matter and water. This is where the 'science' comes in.
|Photograph by Tanveer Badal at www.tanveerbadal.com|
Keyhole gardens are even making their way into other parts of the globe, such as the USA and UK, where school-children are building their own gardens, growing their own food and learning about organic principles.
|Photo by Send a Cow at www.sendacow.org.uk|
It may not produce huge quantities of food, however, to many low income families, any financial savings they can make on food expenditure will make a real difference to their lives. There are also huge social benefits to enabling families (everywhere) to spend time together with nature, nurturing seeds, watching things grow, participating in physical activity and eating what they sow.