Large Modular Metal Raised Garden Bed

Our raised beds are built from 24-gauge aluzinc steel — up to 7x more rust- and corrosion-resistant than standard galvanized metal — so with proper care, you can expect them to last 20+ years. You can help extend that lifespan even further by keeping your soil well-draining, maintaining a pH of 6–7, and avoiding fresh chicken manure.

On top of that, every Epic Gardening raised bed purchased after July 23, 2026 is backed by our Limited Lifetime Warranty, which covers manufacturing defects for as long as you own it.

Link to warranty

Our raised beds go through rigorous, independent safety testing:

• REACH compliant — screened against 240+ substances of concern under EU chemical safety standards.
• Prop 65 safe — lead and phthalate levels verified well within California's limits, the strictest in the country.
• Heavy metals tested — lead and cadmium came back safe or non-detectable.
• ASTM F963 certified coating — the same standard used for children's toys. The surface coating doesn't leach.
• Corrosion resistance tested — passed accelerated salt spray testing (ASTM B117), the industry standard for coating durability.
• Cold-rolled steel with an aluminum-zinc alloy coating — the materials we'd want in our own gardens, because they are in our own gardens.

If you're placing your bed on pavers, concrete, tiles, a porch, or anything you don't want to stain, it’s better to add a bed liner or geotextile fabric. Go ahead and place your box in position, then put the fabric on the bottom of the bed from the inside. Run any excess fabric up each side and then fill your bed with soil. The fabric allows water to drain freely, but it keeps soil from messing up your floor.Optional: To really protect the surface, place thick builder's plastic down before putting your bed into position. Once the bed is filled, any excess plastic can be trimmed around the edge of the garden bed with an Exacto knife.

Yes, you can combine two beds together. We always recommend installing bracing bars when combining beds to prevent bowing due to soil pressure.

Raised bed gardening reduces pest pressures, elevates the garden to a more comfortable working level, and is a great way to guarantee you have quality soil to grow in. You’ll also have fewer weeds to deal with and an easier time clearing out any that pop up. Also, your soil doesn’t become compacted like an in-ground bed. It gives you better control over your gardening environment.

Pretty much anything. We’ve got some ideas to get you started, but really, the sky’s the limit.

All the materials used are 100% food-safe and will not leach into your soil, allowing for safe, healthy food production. Our aluzinc steel raised beds are coated with a non-toxic, USDA-approved paint and the hardware supplied is food-grade stainless steel. 

No, they won’t. Compared to standard concrete and plastic beds (especially if made from a dark color or material) our metal raised beds will outperform all of them, maintaining even, cool soil temperatures. The superior reflectivity of the aluzinc steel keeps most of the heat from ever passing into the soil. And, that bulk of soil in your bed will quickly absorb and spread the small amount of heat it gets from touching the stainless steel panels.

Yes, the safety edging is UV-safe and designed to withstand both freezing and hot temperatures.