Wood Planter Box: 11 Ideas from Scrap Builds to Built-In Benches

These 11 ideas run from a simple pine box you can knock together in an afternoon to substantial raised beds built from cedar or hemlock, and the right one depends on whether you need mobility, seating, privacy, or serious growing space.

A box on legs saves your back from bending; a built-in bench saves square footage on a cramped patio; a tiered planter stacks herbs or flowers in a small footprint.

The common thread is that each uses wood you can find at any home center and finish in a weekend, with drainage details I would not skip: half-inch holes through every bottom board, lined with landscape fabric if gaps run a quarter-inch or wider.

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1. Simple DIY Pine Planter Box

Pine boards from any home center make this the easiest entry point into building your own planter.

Check the bottom boards: they need gaps or drilled holes so water drains instead of pooling. I would line the inside with landscape fabric to keep soil from washing through those gaps while still letting water out.

2. DIY Planter Box with Trellis

A trellis built onto the box itself saves you from installing separate supports later. The slatted panels and pergola top give climbing vines 2 directions to grow, which fills the screen faster than a flat wall.

The black fabric lining tells me the builder wanted clean sides without soil spilling through joints.

I would use the same, or a pond liner with bottom holes poked through. Weight matters once this is loaded with wet soil and mature plants; set it on level ground or anchor the base.

3. DIY Railing Planters

These boxes straddle the railing rather than hanging from it, which I prefer for sturdiness and for protecting the rail finish.

The custom fit means measuring your actual railing width first; a half inch off and the box rocks or slips.

I would use exterior screws and add a cleat underneath that grips the rail on both sides. Drainage holes go in the bottom, but check where the water lands; your neighbor below may not appreciate drips on their balcony.

4. DIY Strawberry Planter

The pyramid shape gives each strawberry plant its own pocket of soil and light, which beats crowding them into flat ground where fruit rots against damp earth.

The A-frame sits on gravel, so the legs stay drier than they would on soil.

I would angle the planting pockets slightly backward so soil does not slide out when you water.

The height puts fruit within easy reach and puts leaves above most slugs, though you will still need to net against birds if you want any berries yourself.

5. DIY Privacy Screen Planters

A planter with privacy screen attached solves 2 problems where neither piece alone would do enough. The horizontal slats give you partial blockage immediately; add climbing plants and the screen fills in over a season.

The stained wood and modern lines suit a contemporary patio, but the idea works with any style if you match your wood and slat spacing.

I would set this perpendicular to the sightline you want broken, not parallel to it, or you create a corridor instead of a wall.

6. DIY Tiered Planter

Three levels in the footprint of one planter lets you grow herbs that need different conditions in the same structure: thyme and rosemary up top where it dries faster, basil and parsley lower where moisture lingers.

The pallet wood keeps cost near zero if you have a source and time to pull nails.

The builder calls this a planter and herb box combined. I would treat the wood or line the boxes; pallet wood is rarely rated for ground contact and rots faster than decking or cedar.

7. DIY Scrap Wood Outdoor Planter

Scrap wood planters cost nothing if you keep cutoffs from decks, fences, or old furniture. The varied widths and colors in these boxes show the mix; I would sand any rough edges that touch soil or hands.

Check that none of the wood was pressure-treated with chromated copper arsenate, the greenish-tinted lumber common before the EPA phased it out for residential use. That leaches and does not belong near vegetables or herbs.

Modern ACQ-treated or bare cedar scraps are fine. Line with plastic or fabric if gaps are wide enough to lose soil.

8. Built-In Planter Box Bench

A bench with planters built onto both ends gives you seating and greenery in one footprint, which matters on small patios where every square foot counts.

The gravel base here drains well and keeps the wood drier than bare earth would.

I would use 2-inch thick seat boards so the span does not sag with use; thinner decking flexes over time.

The planter depth looks shallow, so stick with compact shrubs or annuals rather than deep-rooted perennials. Match the wood species to your climate or plan to reseal on a schedule that keeps the grain protected.

9. Elevated Planter Box on Legs

Elevated boxes on legs save your back and keep rabbits out; this one stands high enough to work standing up. The plastic lining protects the wood but needs bottom slits or holes so roots do not sit in water.

Legs must be solid, 4x4s at minimum, with cross-bracing if the box runs longer than 4 feet.

I would add caster wheels to one end if you need to move it for patio cleaning or winter storage. Seal or paint legs and underside before you fill the box, since you will not reach them later.

10. Large Raised Wooden Garden Beds

Raised beds this deep, probably 18 inches or more, let you grow carrots, parsnips, and other root crops even where native soil is compacted clay or rock. The scale here is serious growing, not a few herbs by the door.

Fill costs add up fast at this volume. I would layer the bottom with logs, branches, and leaves the first year; they decompose and shrink, saving soil, but you will top off in year two.

Use untreated cedar or hemlock for the frames; pressure-treated lumber is cheaper but I skip it for anything I eat from.

11. Long Rectangular Patio Planter

A single long box like this defines a patio edge or screens a fence base without breaking the budget on multiple planters.

The black fabric liner keeps soil off the wood and extends its life; I would staple it high enough to fold over the rim, then trim flush.

The length needs internal cross-bracing every 3 feet or the sides bow outward under soil pressure.

The stone patio underneath means drainage must go somewhere; drill holes and set the box on shims so water exits freely rather than pooling on the pavers.

Best Wood for Planters

Cedar lasts longest against rot because its natural oils repel moisture without any finish applied. I would use it for planters I intend to keep bare or oil lightly.

Pressure-treated pine costs less and holds up fine if you seal it, but the treatment does leach small amounts over time. I avoid it for vegetables or herbs I will eat; flower beds and ornamentals are where it belongs.

Hemlock splits the difference: harder than pine, accepts stain well, and resists decay better than spruce though not as long as cedar. It is the middle choice I pick when cedar prices spike.

Planter Box Drainage

I drill a row of half-inch holes through each bottom board, spacing them so water escapes fast enough that roots never sit soggy.

A damp rag while you work keeps glue drips from hardening on show surfaces. Drill pilot holes before driving screws, especially near board ends where splitting hides until the wood swells.

Landscape fabric on the bottom filters soil without blocking flow.

It is not required, but I use it when gaps between bottom boards are quarter-inch or wider. Seal or stain after assembly, before planting; moisture never reaches protected grain.

Lining Wooden Planters

Plastic nursery pots inside wood boxes keep the wood dry and let you build from lighter stock: 1-inch lumber or plywood instead of thick boards rated for ground contact.

A coat of exterior paint or a penetrating sealant on the outside faces buys the wood a few extra seasons before the grain starts to gray and check. The wood lasts years longer because it never touches moist soil directly.

I trim it flush after stapling so it does not show.

Black fabric or pond liner works for clean-sided boxes where soil spilling through joints would look messy.

The choice between fabric and plastic depends on how often you want to refill: fabric lets finer roots through and breaks down faster; plastic pots lift out entire for repotting.

Frequently Asked Questions