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Raised garden bed using corrugated iron

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A simple yet attractive raised garden bed using corrugated iron that is ideal for growing vegetables, herbs or flowers.





The project


Bunnings Workshop member moshiach77 built this impressive raised garden bed using corrugated iron, Cypress timber, hardwood sleepers and recycled pallet timber.


To cut the corrugated iron to size, he used a 1mm cutting disc on an angle grinder and clamped a piece of angle iron to the sheet as a guide. 


Workshop member crazycrisi achieved a similar look using Colorbond edging in their raised garden bed build




How to build a raised garden bed using corrugated sheets


When Bunnings Workshop member Phil_70 considered building a raised garden bed using corrugated sheets, he wondered how to make sure it doesn't collapse under the weight of the soil. Experienced member Adam Woodhams reckoned the "easiest and most cost effective way is to use Treated Pine sleepers (or recycled railway sleepers) as uprights. You'd just run a row of them then drop your sheet in behind and use roofing Tek-screws to fix the sheets to the posts."


"You'd likely want your posts at about 1200mm spacings, maybe a little less. Not sure of the load that the sheets would take so maybe even consider 1m centres. Like any retaining wall, because that's basically what you are building, you'll want to make sure that the uprights are well fixed off to resist tipping. So say your bed wall will be 900mm high I'd be sinking posts into the ground around 500mm and then concreting them in place. Different soils change this though. If you've a heavy clay you don't need to go as deep."


Step-by-step guides to building a raised garden bed


Adam has also shared how to build a simple raised garden bed with easy-to-follow step-by-step instructions, a full list of tools and materials, and a video guide. It's an achievable project for beginners.  


simple raised garden bed.jpg


More experienced members might like to check out How to build a raised garden bed using recycled pallet timber, while experts can follow the guide How to build a planter box-style raised garden bed that can be adjusted in size to meet your needs. It even includes an optional seat for when you want to take a break and enjoy the garden.


raised garden bed using pallets.jpg


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