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I am hoping to do a 1.2 m high × 0.8m raised planter along 6m of the dividing fence (ensuring appropriate setback from pool fence for compliance). I will be transplanting some mature everlasting love frangipani trees from the front of my yard. The fence is ours, the units have a smaller fence on the otherside (not sure why, was like this when we purchased)
I'm thinking of basically putting the posts about 1.5 m apart, rails across top, middle bottom. I'm then thinking I'd line with builder's plastic. I would then need some kind of support going across? Maybe just timber painted in bitchimen paint?
I would finish the front and side with fence pailings leaving the back just as the builder plastic? Will this work?
I don't have a nail gun so what would the most cost effective screws be for the pailings?
Hi @Ona-Budget,
When building a raised garden bed along the fence, it's essential to create a freestanding structure rather than relying on the fence for support. Using the fence as part of the bed can cause damage over time and may not provide sufficient strength to retain soil, especially when it becomes waterlogged. Instead, construct a self-supporting structure with posts positioned at 1.2-metre intervals and secured with concrete footings for stability.
Treated pine sleepers are an excellent choice for this project due to their durability and strength. You can use 200 x 50mm sleepers for the walls, ensuring they can handle the pressure from the soil.
Lining the inside of the bed with builder's plastic can help protect the timber, but ensure adequate drainage by puncturing holes near the base.
When attaching the pailings to the front and sides, use galvanised screws for longevity. Since you don't have a nail gun, consider using 50mm galvanised screws for a secure hold. Pre-drilling the holes can help prevent the timber from splitting.
Here's a helpful guide: How to build a raised garden bed.
Please let me know if you have any questions.
Mitchell
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