What's inside
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A wooden patio planter screen can block sightlines, soften a bare wall, and give you room to grow herbs or flowers in the same footprint. The most reliable design is a row of planter boxes tied together with a slatted privacy panel. It is tall enough to create separation, but open enough to let wind pass through instead of turning the screen into a sail.
This project is suitable for a confident beginner. You will need to make square cuts, assemble boxes, and drive exterior screws. Allow a full weekend for one screen, including paint or stain drying time.
Contents
Plan the Size and Location
Before buying lumber, measure the patio and check the screen’s exposure to wind. A practical single-unit size is 24 inches wide, 18 inches deep, and 30 inches tall, with a privacy panel rising another 42 to 54 inches above it. Two or three units can be placed side by side.
Keep the finished height below local fence limits if the screen is near a property line. Also check overhead obstructions, sprinkler locations, and how much room you need to walk around the planters. Do not place the screen where falling leaves will clog a drain or where water can run toward the house.
| Material | Advantages | Drawbacks | Best use |
|---|---|---|---|
| Cedar | naturally rot-resistant, light, easy to work | Costs more; soft surface dents easily | Uncovered patios and long-term outdoor use |
| Pressure-treated pine | Low cost and widely available | Often wet, twisted, or difficult to finish | Budget builds, especially when painted |
| Exterior-rated plywood | Stable panels with few joints | Edges need careful sealing; appearance is plain | Planter sides and hidden structural parts |
Cedar is the easiest recommendation for exposed parts, but pressure-treated pine is perfectly reasonable if the budget is tight. Let treated boards dry until they feel dry and weigh less before painting; fresh boards commonly shrink and split as they lose moisture.
Materials and Tools
For one 24-by-18-inch planter, buy two 1-by-8-by-8-foot cedar or treated boards for the box, one 2-by-2-by-8-foot board for cleats and uprights, and enough 1-by-2 or 1-by-3 boards for the slats. Add exterior screws, exterior wood glue, landscape fabric, and a finish rated for outdoor use.
Use exterior wood screws rather than indoor construction screws. Stainless steel is the safest choice with cedar, while coated exterior screws are usually fine with treated pine. You will also need a drill, countersink bit, tape measure, square, saw, clamps, and a sanding block.
A quality exterior paint or stain costs more than interior finish but saves maintenance. Do not use ordinary indoor paint on the planter or slats.
Build the Planter Box
Cut the front and back boards to 24 inches. Cut the two end boards to 16 1/2 inches if you are using 1-by-8 boards and want an outside depth close to 18 inches. The exact end length depends on your board’s actual width, so measure the lumber rather than trusting the nominal size.
Cut four 2-by-2 corner posts to 28 1/2 inches. These should extend above the box to support the privacy panel. Assemble the front and back boards to the posts first, keeping the top edges flush. Predrill near the ends, apply a thin bead of exterior glue, and use two screws per joint. Add the end boards between them.
Cut a plywood or solid-board bottom to fit inside the box. Drill several 3/8-inch drainage holes, then screw the bottom to lower cleats attached inside the box. Leave at least 1/2 inch between the bottom and the patio so water can escape. Line the interior with landscape fabric after finishing the wood; do not use plastic unless you also provide a carefully designed drainage outlet.
Add the Privacy Panel
For a 48-inch-high panel, cut two horizontal rails to fit between the uprights. Fasten one near the top and one just above the planter rim, checking that they are level. Add a center rail if the slats are thin or the panel is wider than 24 inches.
Cut 1-by-2 slats to 48 inches and space them vertically across the rails. A 1-inch gap provides useful privacy while allowing wind through. Use a scrap block as a spacer so the gaps stay consistent. For more privacy, reduce the gap to 1/2 inch, but expect greater wind load and less light.
Keep the slats at least 2 inches above the soil line. Soil and standing water accelerate rot, particularly where a slat meets the planter rim. Round over sharp corners with sandpaper, and slightly bevel the tops of the uprights so rain does not sit on end grain.
Finish and Anchor the Screen
Sand exposed faces to 120 grit, then remove dust. Seal all faces and especially cut ends before assembly when possible. With cedar, a penetrating exterior oil preserves a natural appearance but requires more frequent recoating. Paint gives better color coverage and protects well if the wood is properly primed.
Set the finished screen on patio pavers, a concrete pad, or adjustable outdoor feet. Never leave the planter sitting directly in wet soil. For a freestanding screen, add weight with soil and plants, but that may not be enough in a windy location. Fasten the uprights to a wall, railing, or concealed metal brackets where permitted. Avoid drilling into thin vinyl siding or relying on decorative screws.
Use outdoor planter feet under the box to improve drainage and reduce staining. In exposed patios, stainless exterior angle brackets can reinforce the connection between the planter and panel.
Planting and Seasonal Care
Use a lightweight container mix rather than garden soil, which compacts and makes the planter unnecessarily heavy. Choose plants for the actual light level: tall ornamental grasses, bamboo varieties approved for containers, or trellised vines can provide screening, while herbs and annuals work well in the lower box.
Leave room for mature growth. A crowded planter needs more water and can push against the slats. In summer, check moisture daily during hot weather. In winter, move portable units to a sheltered spot, empty excess water, and inspect for split boards. Recoat exposed wood when the finish begins to fade or water stops beading. Tighten screws after the first seasonal shrinkage, and replace any slat with soft wood before it compromises the panel.