How to Build a Raised Garden Bed

Raised beds solve more problems than they create. You get better drainage, warmer soil in spring, easier access for planting and weeding, and a clean visual boundary between garden and lawn. The work is straightforward—this is one of the few outdoor projects that doesn't require special skills, but it does demand patience with the ground prep. The difference between a bed that lasts five years and one that lasts ten is spending an extra hour making sure your base is level and your wood is sound before you ever drive a screw.

1. Mark Your Garden Footprint. Pick a spot that gets at least 6-8 hours of direct sun daily. Use a level to check that the ground is reasonably flat—small slopes are fine, but major dips will trap water. Mark your bed outline with spray paint or string. Clear away grass and weeds inside the footprint with a spade or sod cutter.
2. Pack and Level the Base. Use a shovel to scrape down high spots and fill in low spots within the footprint. Pack the soil down firmly with a tamper or by walking over it repeatedly. The goal is a surface level enough that water won't pool in one corner when you fill the bed. Don't aim for perfectly flat—you're looking for 'reasonably flat.'
3. Build Your Frame. Lay your boards in a rectangle on flat ground near the bed site. Use exterior-grade wood (cedar, composite, or pressure-treated if budget-conscious) cut to your desired dimensions. Attach the corners with 3-inch exterior wood screws or galvanized corner brackets—two screws per corner minimum. Drill pilot holes first to prevent splitting.
4. Position and Stake Frame. Move the assembled frame to your prepared location. Set it in place and check that the top edges are level using a 2-foot or 4-foot level placed across the frame in multiple directions. Adjust by adding or removing soil underneath as needed. Once level, drive 12-inch landscape stakes through the frame into the ground at each corner and at the midpoint of each long side.
5. Lay Weed Barrier. Line the bottom of the frame with landscape fabric stapled to the inside walls. This prevents perennial weeds and grass from creeping up into your bed while still allowing water to drain. Overlap the seams by 6 inches if you're using multiple pieces. Leave the fabric loose at the top edge so you can fold it over later.
6. Fill with Soil Mix. Add a mix of topsoil and compost—roughly 60 percent topsoil, 40 percent finished compost—to within 2-3 inches of the top. Rake and level the soil. Water it lightly and let it settle for a day before planting. The bed will settle 1-2 inches over the first season.
7. Cap the Frame Edge. Optional but recommended: run a 1x2 trim board along the top inside edges and secure it with screws. This gives you a clean line, creates a seat edge, and keeps loose soil from spilling. Alternatively, fold your landscape fabric over the top and staple it to the interior walls.
8. Plant Your Garden. Let the bed sit for at least 24 hours so soil settles and compacts. Then plant directly into the fresh soil. Your bed will be workable immediately, though it will continue to settle slightly over the first few weeks.