SiLOSSiLOS

Build a raised bed you won't fight

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cedar plank
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1The size that works

Four feet wide, reachable from both sides without a step-in; three feet if it sits against a fence and you only reach from one side. Length is whatever your lumber gives you — an 8-foot board makes an 8-foot bed with nothing wasted, so most beds land at 4x8, which is 32 square feet of actual growing room. Depth: 12 inches handles most vegetables, 6 is enough for lettuce and herbs, and carrots or tomatoes are happier past 18.

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2Two or three ways to fill it

Buy bagged mix and count bags against the bed's volume (length times width times depth, then convert to cubic feet). Order it in bulk by the cubic yard if the bed is big — cheaper per foot but you need somewhere for a small mountain of dirt to sit for a day. Or skip buying dirt altogether and lasagna it: cardboard on the grass, then alternating two-inch layers of browns (leaves, straw, cardboard) and greens (kitchen scraps, grass clippings, manure) up to about three feet, which settles and rots down into a full bed over several months to a year, no digging required.

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3The first hour

Most of it is math, not muscle: measuring the site, checking it's roughly level, and cutting lumber to lengths that don't waste a board. Corners get reinforced first — a bed full of wet soil pushes outward hard, and a weak corner bows within a season. If you're building on grass, that comes out or gets smothered before anything goes in.

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4What goes wrong

People guess the soil volume and come up short by a third — use the length x width x depth math, not a feeling. Treated lumber against food crops makes people nervous; cedar or redwood skips the question, or line a treated frame with fabric. Soil settles after the first watering, sometimes by a couple of inches, so a bed that looked full on day one looks a little empty on day three. That's normal, not a leak.

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5What it costs

No sourced price-per-board or price-per-yard figure is reliable enough to print here — lumber and bulk soil prices move by region and by season. The one number worth trusting: a 4x8x1-foot bed holds about 32 cubic feet of soil, so any lumber yard or garden centre can price your exact bed from that.

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