How to Build a Raised Garden Bed on Any Budget

Why Raised Garden Beds?

Raised beds warm up faster in spring, drain better than in-ground gardens, and let you control the soil quality. They also reduce back strain and make it harder for weeds to invade.

Choosing Your Materials

Cedar ($80-$150 for a 4x8 bed): Naturally rot-resistant, lasts 10-15 years. The gold standard. Pine ($30-$60): Affordable but lasts only 3-5 years untreated. Galvanized steel ($100-$200): Modern look, lasts 20+ years. Composite lumber ($150-$250): Never rots, but expensive upfront.

Bed Size Guidelines

Keep width at 4 feet max so you can reach the center from either side. Length can be anything — 8 feet is standard for a single 2x8 board length. Height: 11 inches (single board) for leafy greens, 18-24 inches for deep-rooted crops like tomatoes and carrots.

Building a Simple Cedar Bed

For a 4x8 foot bed at 11 inches tall, you need: four 2x8x8 cedar boards, four 2x2x8 cedar stakes, exterior deck screws. Cut boards in half to get 4-foot sides. Screw stakes inside each corner, then attach boards to stakes with three screws per joint. That's it — no fancy joinery needed.

Filling Your Raised Bed

Use the "lasagna" method to save money: bottom layer of cardboard (suppresses weeds), then coarse wood chips, then a mix of 60% topsoil, 30% compost, and 10% vermiculite or perlite for drainage. A 4x8x11 inch bed needs about 30 cubic feet of material.

Best Crops for Raised Beds

Tomatoes, peppers, lettuce, carrots, radishes, herbs, and bush beans all thrive in raised beds. Root vegetables especially benefit from the loose, stone-free soil. Avoid sprawling crops like pumpkins and corn in small beds.