By Azura · Updated June 2026 · Raised Garden Hub is reader-supported. When you buy through links on our site, we may earn an affiliate commission at no extra cost to you.
You can build a solid raised bed in an afternoon with basic tools. Here’s the simple version that lasts — and where to spend (and save).
Tools & materials
- Cordless drill + exterior screws (or a bed kit’s included bolts)
- Saw (or have the store cut lumber to length)
- Level, tape measure, square
- Cedar boards (rot-resistant) or a galvanized metal kit
- Cardboard or hardware cloth for the base
- Soil mix to fill
Avoid untreated pine — it rots in 2–3 years. Cedar lasts 5–10; metal lasts 15–20.
Step 1: Pick the spot
Choose a level area with 6+ hours of sun. Clear grass or lay cardboard over it to smother weeds.
Step 2: Cut and assemble the frame
For a classic 4×8 ft bed, cut two 8 ft and two 4 ft boards per layer. Screw the corners together (pre-drill to avoid splitting). Add a corner post inside each joint for strength, and a center cross-brace on the long sides so the walls don’t bow.
Step 3: Line the bottom
- Cardboard smothers weeds and breaks down — good over soil.
- Hardware cloth keeps out gophers and voles — good if you have burrowing pests.
Leave the bottom open to the ground for drainage and worm access.
Step 4: Level and fill
Set the frame, check it’s level, then fill. For deep beds, save money with cheap fill methods on the bottom and a quality soil mix on top.
Budget & time
- DIY cedar 4×8: ~$80–$150, 2–3 hours
- Metal kit 4×8: ~$100–$160, 30–60 minutes (bolts together)
Common mistakes
- Beds wider than 4 ft (you can’t reach the middle)
- No center brace (long beds bow outward)
- Filling with pure garden soil (compacts)
Prefer to skip the build? See our best raised garden beds of 2026 or compare metal vs wood.