Menu

Find a calculator, bed size or guide

Metal or cedar raised beds?

Coated steel and cedar raised beds compared on what makers publish and what extension services say about lifespan and safety, with which situations suit each.

Which suits you

Metal

Metal suits a bed you want tall, with walls up to 32 inches in the kits we list, and one kit that can be set up in several layouts.

Cedar

Cedar suits a bed you want to build to your own size, or a lower bed, and a natural material; the heartwood lasts longer than the sapwood.

This compares what makers publish and what extension services say. It is not a test of any bed.

12 in24 in36 in121517242629327.25810.51414.522.52931.53233.235MetalCedar
Every published height in each group, on one scale. The scale is in inches.

Side by side

MeasureMetalCedar
In our catalogue21 families, 135 sizes (Vego Garden, Birdies, Metal Garden Beds, Tarter, Best Choice Products, Garden In Minutes, Epic Gardening)11 families, 29 sizes (Gronomics, Greenes Fence, Gardener's Supply, Outdoor Living Today, VegTrug)
Published heights12 to 32 in7.3 to 35 in
Stated soil capacity4.8 to 96 cubic feet3.5 to 60 cubic feet
Lifespan, as published14-gauge galvanized steel could last 35 to 50 years before first perforation; most beds are 20 to 24 gauge (Virginia Cooperative Extension)10 years or more for cedar or redwood (UNH Extension); untreated wood, even cedar, often begins to decay within a few years (WSU Extension)
Safety notesZinc may leach only below pH 5; some metal beds sold online have been found to contain lead (University of Minnesota Extension)Untreated cedar has no preservative; the question applies to treated lumber, not cedar
FastenersBolted panels supplied with the kitStainless or hot-dipped galvanized screws (Western Red Cedar Lumber Association)

See the beds

References