Some of the world's most ingenious gardening techniques were born out of necessity rather than trend.
Keyhole gardening, developed in Lesotho, Southern Africa, to help people grow food in difficult conditions, is one such example. Decades later, its clever design is still winning over gardeners thanks to its simplicity, efficiency and surprisingly low maintenance.
A keyhole garden is a circular bed with a narrow path leading to the centre, where a compost basket enriches the surrounding soil with nutrients. It's a simple technique that makes growing possible where the soil quality is poor and water is scarce – but, perhaps most importantly, it was created with a specific kind of gardener in mind.
In the 1990s, Lesotho had one of the highest HIV/AIDS prevalence rates in the world. Keyhole gardens, highly self-sufficient raised beds, were developed by the Consortium for Southern Africa Food Security Emergency (C-SAFE) to help people living with the illness – or anyone otherwise unable to tend to a traditional garden – grow their own fresh food with minimal effort.
While the method was created for people who were too unwell to garden conventionally, it proved so effective that it was quickly adopted by households regardless of their health. In the end, C-SAFE helped build over 20,000 keyhole gardens, many of which remained in use. Today, keyhole gardens are still found across much of Africa.
"What I love most about this method is that it solves several problems at once," says Loren Taylor, a US-based garden designer and owner of water-feature retailer Outdoor Fountain Pros. "It saves space, improves the soil naturally, and makes gardening much easier on your back. After 17 years of designing gardens, I've learned that the smartest ideas are often the simplest, and keyhole gardening is a perfect example."
As the British gardener and author Simon Akeroyd shows in an Instagram Reel, building a keyhole garden is relatively straightforward. Start by creating a circular border from any free materials you have to hand, such as rocks, bricks, logs or even recycled materials, leaving a narrow inlet to create the distinctive keyhole shape.
At the centre, create a designated area for a compost heap – the "heart" of the bed – and fill the surrounding space with soil. Then plant your favourite vegetables; leafy greens, lettuce, spinach, herbs, peppers, beans, strawberries, and small tomato plants work well, says Lauren.
As your plants grow, feed the compost pile with kitchen scraps such as coffee grounds, peels and vegetable trimmings, alongside leaves and other garden waste.
"Most keyhole gardens work best when they're around 1.5 to 1.8 meters across," Lauren adds. "That size allows the nutrients from the centre to reach every part of the bed.
"As compost breaks down, it feeds the soil with nutrients and helps keep it moist. The plant roots grow toward these nutrients, so your vegetables get a steady supply of food as they grow. Because the soil holds water better, you'll also spend less time watering. It's a simple system that keeps working with very little effort."
The best part is that you don't need a large plot to build a keyhole garden, nor do you need to invest hours maintaining it.
"I often recommend it to busy families who want to grow fresh herbs and vegetables with minimal maintenance.
"Place the garden in a sunny spot, close to the kitchen. When it's only a few steps from your back door, adding food scraps becomes part of your daily routine. Before long, you'll notice how naturally the whole system fits into everyday life."
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Wanda Sachs is the Multiplatform Writer for Country Living and House Beautiful, exploring the latest in gardening, wildlife and sustainable living alongside interiors and property. She is particularly interested in human-interest stories, the intersection of design and pop culture, and the evolving relationship between urban and rural life. Previously, she served as Associate Editor at The Berliner in Berlin, where she reported on culture and fashion. Wanda studied English and German at the Goethe University Frankfurt and Exeter University.
