When it comes to industrial looking garden planters, corrugated metal has the edge. Practical and durable, corrugated steel can look incredible when transformed into a planter.
If you choose galvanised steel for your planter, it can last up to 60 years! It’s a great choice for a planter as, if you’re growing thirsty plants like beans or squash, it’ll be in almost constant contact with water and won’t rust. It’s also highly recyclable so is a great sustainable choice.
The galvanisation process involves coating steel with a layer of molten zinc, making it resistant to corrosion, it’s why it’s such a great choice for roof panels and in this case, planters.
Let’s take a look at how to build your own corrugated metal planter box and where you can find some ready-made versions to grace your garden, vegetable plot or balcony.
How to build a corrugated metal planter box
Before you start, you’ll need to get hold of some corrugated roof sheets. You can pick these up at a DIY store or order them online, they aren’t particularly expensive, just cumbersome!
What you’ll need
- 2 4x8ft corrugated roof sheets
- Metal flashing for the corners
- 4 2×3 inch, 8ft long pieces of wood, pressure-treated is ideal
- 2 3×4 inch 8ft long pieces of wood for the top edges
- Decking screws
- Chicken wire for the base of the box
Follow this step-by-step guide from mycrazygoodlife.com to create a fabulous looking corrugated metal planter box.
6 of the Best Corrugated Metal Planter Boxes You Can Buy
If you don’t fancy building your own, take a look at our pick of the best corrugated planter boxes on the market. Metal is one of the more expensive options for garden planters but it’s longer lasting than wood, won’t crack, fade or split and is largely maintenance-free:
1. 4-in-1 modular metal raised bed
This clever raised bed kit from Harrod Horticultural can be configured in 4 different ways to suit your space. It can be arranged in a square, rectangular or narrow shape to fit your garden, patio or greenhouse. It’s constructed from galvanised steel and powder coated for durability. Grow vegetables, flowers or a combination of both!
2. Round galvanised steel raised bed
Who said corrugated planters have to be quadrilateral? This round, corrugated steel planter will provide a stylish, industrial look to your garden and would liven up any vegetable plot. Made from galvanised steel, it won’t rust and is very easy to put together, ideal if you can’t wait to get planting!
3. Large steel grey raised garden bed
Reminiscent of a feeding trough, this extra-large raised bed is a great addition to larger outdoor spaces. With a roomy 81cm deep planting area, you can grow a range of deep-rooted plants including tomatoes, pumpkins, parsnip and winter squash.
4. Reclaimed corrugated steel roof planter
If you prefer a more rustic look, these gorgeous and unusual reclaimed steel planters are an ideal choice. Available in a range of sizes, you can stand them alone or group different sizes together for greater impact. You can even choose your level of patina and add a lid to transform it into a useful side table.
5. Set of 2 metal raised bed planters
Perfect for growing vegetables, these sleek, dark grey metal planters will add a touch of style to your plot. They’re 45cm high so deep enough to grow most crops. The dark colour will warm in the sun and retain heat to keep plants cosy into the evening. These planters will contrast beautifully with green and yellow foliage, providing an aesthetically pleasing and practical addition.
6. Zinc Dolly Tub Planter
This vintage-style, zinc tub planter is tall enough to accommodate an olive or bay tree and would look striking planted with contrasting brightly coloured blooms. This planter doesn’t come with drainage holes but they are easy to add. Zinc planters are lightweight and retain moisture well so offer a good choice for balconies or decking.