What is keyhole gardening? And how to add this sustainable growing system to your backyard:- A type of permaculture known as “keyhole gardening” involves using raised beds that are unique and round, with a central part carved off to create the illusion of a keyhole. A composting basket, which is an essential component of the design, sits in the middle of the cutout. The basket is packed with kitchen and yard trash that, when watered, breaks down and spreads nutrients throughout the raised bed.
Thus, a microclimate is produced wherever soil-improving creatures like earthworms thrive. Easy access to the growing area and the central composting basket is made possible by the keyhole shape. The focal point of landscape designer Giulio Giorgi’s debut garden at the RHS Chelsea Flower Show in the UK, dubbed the “World Child Cancer UK Nurturing Garden,” is a growing system. This gardening technique appealed to him not just because of its sustainability credentials but also because he could adjust the raised beds’ height to make them accessible to everyone due to the keyhole-style’s form and function. We explore the reasons behind the interest in this ingenious technology.
What is keyhole gardening? And how to add this sustainable growing system to your backyard
The Main Elements Of Keyhole Gardening
The raised bed’s form, the compost cage in the middle, and the method of watering the bed—which permits nutrients to seep into the soil naturally—are the three fundamental components of keyhole gardening.
Watering the keyhole garden in the middle allows moisture to percolate through the compost and into the remaining portion of the bed, giving it a steady supply of nutrients.
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The Climates Best Suited To Keyhole Gardening
Originating in sub-Saharan Africa, where agricultural cultivation can be difficult, are keyhole gardens.
Because raised bed constructions maintain moisture, drainage, and nutrients above ground, they are used to successfully grow vegetables on difficult soils and in hard climes, particularly during drought periods, according to Giulio.
They would be especially helpful in regions with extremely poor soil and in drought-prone climates. But you can set up a keyhole garden anywhere, given enough space.
How To Create A Keyhole Garden
According to Giulio, the fundamental rule for a keyhole garden is that you need a level space that is at least six feet in diameter so that nutrients from the compost pile may reach all the roots and produce plants, veggies, herbs, or delicacies.
The raised bed keyhole-style constructions that will be included in Giulio’s Chelsea Flower Show garden are his own creation. “They don’t need chemical glues or concrete to assemble; they fit together like a modular block system,” he claims. This invention will demonstrate to gardeners how to construct a comparable structure out of terracotta bricks, for example.
The blocks made of clay that I have developed have holes in them. In a range of sizes, they interlock to create a sturdy raised bed brick structure. Additionally, because they can be disassembled and reused without creating waste, offering an endless variety of forms and patterns, they were specifically created for ephemeral gardens. Giulio continues, “These blocks can be secured together with wooden stakes through the unique holes in the bricks for additional stability.”
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