DIY large planters outdoor cheap means building your own containers for under $30 instead of paying store prices that start at $80 for anything over sixteen inches. The catch is choosing materials that survive the weight of damp soil and winter freeze-thaw without the hidden costs that erase your savings by year two. A $4.99 plastic storage tub wrapped in sisal rope becomes a Charleston-looking planter that weighs under five pounds empty, and a single bag of microcement covers roughly fifty fluted pots at about sixty cents each if you need volume.
1. Fluted Cement Planters
A bag of microcement runs about $30 and stretches further than you’d think on a planter, which matters when the store charges $80 for anything over sixteen inches tall. The trick is building the fluting right into the form instead of carving it later. Cardboard tubes from concrete formwork, slit vertically and taped back around a plastic pot with a quarter-inch gap, create the ridges. Brush microcement in thin coats, letting each turn matte-gray before the next, and the gaps fill with shadow that reads as genuine cast concrete from ten feet away.
The finish stays slightly chalky, which I prefer to high-gloss sealers that turn slippery by the second season. Water pools in the flute valleys if drainage is lazy, so leave weep holes every third ridge or the root ball rots quietly while the leaves still look fine. After two winters, mine developed hairline checks along the top rim where ice worked in, nothing structural, easy to patch with the same mix. The weight is the real payoff here: a fourteen-inch fluted planter filled with damp soil and a mature boxwood does not blow off a rooftop deck.
2. Rope Tub Planter
A $4.99 storage tub from Dollar General made the nicest planter on my tiny patio last spring. I melted four drainage holes in the bottom with a heated screwdriver, the kind of thing you do once and then remember to do outside because the plastic smell stays in a kitchen for hours. Then I wrapped the whole tub in sisal rope, hot-glued in rows from the rim down, until it looked like something that came from a garden center in Charleston rather than the storage aisle.
The rope softens the plastic lines more than paint ever could, and the tub’s built-in handles become built-in texture once they’re covered. Mine held a cascading sweet potato vine that hid the bottom third by July anyway, but the upper rows stayed neat through rain and watering both. Drainage is the only real work; without those holes, a tub this deep becomes a root rot guarantee within a season.
The finished size reads as substantial even though the whole thing weighs less than five pounds empty, which matters when you’re carrying it up to a third-floor walk-up. Rope replacement costs about six dollars if it ever frays, though mine hasn’t through two seasons now.
3. Upcycled Planters
Old paint cans with the drips still running down the sides make surprisingly good planters. An old ladder leans against the wall as the display rack, and the whole setup costs whatever the leftover latex from the last bedroom repaint ran you. I like this route because the cans are already built to hold liquid. They rust eventually, so drill holes immediately and expect two, maybe three seasons before the bottoms soften.
Toy trucks work too, though only where you can park them permanently. A child will roll anything with wheels, and a truck full of succulents leaves the garage once and becomes garden debris. Rust is fine here; it even reads as deliberate. Capers & Crayons used theirs upright with small greens tucked in the bed, and the scale suits a windowsill or a step where a full planter would crowd the walk.
The real money saver is watching yard sales and auctions for planters someone else already grew tired of. A 24-inch planter won at auction for $2 skips the build entirely, and an hour of scrubbing plus a coat of exterior paint gives you the same result as the $80 version from the home store. My rule is skip anything with cracks that reach the soil line; surface chips paint over, but a split running deep means the freeze-thaw cycle will open it wider by August.
4. Tall Outdoor Planter Boxes
Cedar fence pickets run about $1.58 each at the big-box stores, and three stacked make an 18-inch wall. Cut the dog ear off the top first, then halve one picket for each end. Two-by-four corners, eighteen inches tall, hold the box square. Furring strips cut at an angle and screwed inside give it stakes so the soil weight does not push the planks apart.
The plastic liner is what keeps this from being a two-season project. Raw cedar pickets touch wet dirt, and the rot clock starts immediately. Landscape plastic against the inside walls, with fabric over the bottom for drainage, means the wood stays dry and the liner takes the swelling and shrinking. Braces across the middle, 2by2 or 2by4, stop the long sides from bowing outward once the mix goes in.
This is where I would use the pickets full length, just under six feet, rather than cutting them down and leaving money on the sawdust pile. The width ends up around three feet, which is still enough volume for a small tree or a dense tomato cage.
5. Wood Raised Planter Boxes
Cedar fence pickets are the cheapest wood that still holds up outside, which is why they get bundled into raised beds for vegetables instead of fussier projects. I cut the dog ears off mine, used the full six-foot length for the long sides, and halved the scraps for the ends so nothing got wasted when lumber was already running high. The beds end up just under 3 by 6 feet, sitting directly on soil, which makes them raised planters rather than tall boxes with no bottom and no need for fill dirt to replace the whole column.
The difference matters for edibles. A three-foot span of good loose soil drains fast enough for root vegetables, and the cedar itself resists rot without the chemical treatments that make pressure-treated lumber questionable near food. Landscape fabric on the bottom blocks the clay and the weeds while worms and water still move through.
Eleven beds for $300 means each one costs about what two bags of potting soil would run, so even with a few weekends of cutting and screwing together 2-by-2 frames inside each box, the math works out against buying raised kits. I used 2-inch screws and kept the frame corners simple; miter cuts slow the job down when fence pickets are thin enough that end-grain butting with glue happens anyway.
The 2-by-4 studs work if you have them, though the 2-by-2s save a few dollars per bed and hold fine for this height.
6. Shutter Planters
Vinyl shutters built for exterior windows already fight rain and UV, so repurposing them as planters skips the sealing headaches that rot wood in two seasons. Two sets, each 60–72 inches tall, split at the midpoint with a mitre saw, give you four panels that box together at the corners. The matching vinyl spikes that ship with the shutters are the hidden advantage here: they lock the joints without metal that bleeds rust stains onto your patio. Corner braces and black cap screws with hex nuts finish the frame, and a shelf of treated wood, or whatever scrap you have, sets the bottom.
A salvaged cabinet door works fine for that shelf. The original hardware holes from the shutter mounting already line up close enough; you are not starting from raw stock, you are finishing what a window installer started. The whole assembly stays light enough to drag into the garage before the first freeze, which matters more than wind resistance for anyone renting. Drill through both panels at each intersection, tighten the spikes, and the box squares itself against the brackets. Split-tall shutters also mean the planter height lands where tall grasses or a tomato cage actually looks proportional on a deck, not like a pot swimming in empty space.
7. Cinder Block Planters
Cinder blocks sit heavy and ugly in a stack until you see them as a grid of planting pockets. The standard 8-by-8-by-16 inch blocks run about two dollars each at most hardware stores, and three blocks stacked in an L or U shape gives you a planter roughly knee-high with six open cells for soil or pots. The hollow cores are the right depth for shallow-rooted greens, mosses, and grasses, though lining each cell with a plastic pot keeps the concrete from wicking moisture away too fast. For a freestanding planter, dry-stacking works fine on level ground; if you are building against a wall or into a raised bed, a little construction adhesive between courses keeps the whole thing from shifting when you bump it with the hose. The concrete is already weather-resistant, so there is no sealing or painting required unless you want the look. What you do need to watch is drainage: the blocks themselves hold water, so either keep the interior pots elevated on a few broken pieces of block or drill through the base if you are filling the cores directly with soil.
8. Tire Planters
Old tires stack or sit solo as planters, and either way the rubber holds moisture longer than clay without cracking through a freeze. The trick is cutting the sidewall out if you want a wider bowl shape, which takes a reciprocating saw and about twenty minutes per tire, or leaving it whole for a deeper cylinder that works for tomatoes with a cage slipped over the top. Paint is what saves the project from looking like a junkyard arrival. A single color across every tire in a grouping pulls the eye to the plants instead of the pattern of the tread. Black works for that reason, something like Dixie Belle’s Caviar if you happen to have cabinet paint left from another weekend. Paint every tire the same color, even if the sizes differ, and the collection reads as intentional rather than accumulated. Some people go the other direction and turn the whole stack into a parrot or another bright figure with the sidewalls carved into wings or petals. That takes more time and a video tutorial to follow, but the result is unmistakable from the street. For renters, the single-color route is safer: tires move empty, touch-up is a rattle can away, and your lease deposit stays intact when the garden goes.
9. Pallet Planters
Pallets come apart in two ways, and the choice shapes the whole project. Breaking the slates into planks gives you clean boards to box together into a raised bed or trough, something you can knock out in about an hour and plant with tomatoes, peppers, or anything that needs real root room. Keeping the pallet whole means less labor and a different look: the slates become natural rows for herbs or succulents, or you line the gaps with landscape fabric and fill straight with soil.
The herb approach plays especially well against a porch rail or deck wall. Small terracotta pots slip into the existing gaps if you add metal rings to hold them, or you can fill the pallet pockets with soil directly for a living wall that leans instead of hanging. Paint the pots with chalkboard paint and label them; it keeps the arrangement from drifting into chaos by July when the basil and thyme have traded places visually.
Either method needs the same starting check: look for the "HT" stamp that means heat-treated rather than chemically fumigated. Most pallets that move through retail channels carry it, but the ones that do not are not worth the risk for anything you will eat.
10. Barrel Planters
A used 55-gallon steel barrel runs about what you’d pay for a single large nursery pot, and it yields two planters once you cut it in half. The trick is finding one that held food-grade or non-toxic material, since anything that stored petroleum or harsh chemicals will leach. Farm supply stores and local co-ops sometimes list them, or watch industrial auction sites where restaurants unload sealed containers.
Cutting takes an angle grinder with a metal cutoff wheel, or a reciprocating saw if you have patience and extra blades. Mark your line level, clamp the barrel so it cannot roll, and wear a respirator, not just a dust mask. The steel is thin enough to cut in a few minutes, but the rim and any ribs underneath the label will fight you. Once it’s split, knock down the cut edge with a flap disc on the grinder until you won’t slice a knuckle while planting.
Drainage means a drill and a step bit, or a hole saw if you own one. An inch to an inch-and-a-half hole every eight inches or so across the bottom keeps someone alive through a wet week. I would not bother with a layer of gravel; modern soil science says it creates a perched water table. Instead, the half-barrel itself is deep enough that most plants root well above any brief saturation.
The real limit is weight. Filled, each half-barrel will take two people to shift. Position it before you add soil, because repotting a sixty-pound tomato in August is not a one-person job.
Materials That Work
Large outdoor planters live or die by what you build them from. These are the materials that actually hold up when you’re trying to stay cheap.
Plastic storage tubs drill easily for drainage and cost next to nothing at big-box stores. The thin walls mean they bow once soil goes in, so I only reach for them when I’m wrapping the outside in something stiffer or burying them partway in a bed.
Wood pallets need disassembling first, and the reward is free lumber with built-in character. Pine rots fast; cedar or redwood lasts. A weed barrier stapled to the inside sides makes the difference between two seasons and five.
Old furniture with a solid shell, think dressers or desks with the drawers removed, already has shape and enough weight to stay put in wind. Drainage means cutting holes in whatever bottom is left, which takes ten minutes with a hole saw.
Tires stack for height without toppling and insulate roots against soil temperature swings. Paint keeps the rubber look from reading "junkyard," though plenty of people lean into the industrial aesthetic and plant trailing vines to softens the edges.
Cinder blocks are heavy enough to stay put without anchoring, and the cores fill with soil for planting or stay empty for structure. Stack them dry and they still hit fifty pounds apiece, so this is the one material that works on a sloped driveway or windy balcony without extra bracing.
Drainage Without Buying New
A sealed bottom on a large planter is the fastest way to rot roots and waste soil. Most cheap finds, from steel barrels to tree stumps, start out holding water, so drilling drainage holes is the first move after the container is clean and cut.
For stumps, angle the bit so holes exit the side rather than the bottom; the wood grain below will still clog a flat drain. On steel barrels, a metal bit through the cut rim and base does the job. Gravel or broken wood at the very bottom buys you air space without buying extra potting mix, and it keeps the hole from silting shut if your soil is heavy.
Landscaping fabric comes next, stapled to the inside walls so it forms a liner between soil and container. It stops the mix from packing against drains and weeds from sneaking in, especially under raised boxes where grass wants back in. Pair it with a plastic layer underneath if you are setting the planter directly on soil; the combo lasts longer than either one alone.
The right mix matters more on a budget because you are not filling the whole void with bagged soil. A 70/30 blend of potting soil to compost, with straw or bark worked into the bottom third, drains well and still feeds roots for the season.
What These Projects Actually Cost
A single 40 lb bag of microcement runs about $30 and stretches across roughly fifty planters. That pencils out to sixty cents per pot before water or pigment, which is hard to match with anything store-bought in the 20-inch range. The cedar picket approach from Twelve On Main lands even lower: around $1.58 per picket, with eleven full raised beds totaling $300. Their three-by-six boxes averaged under thirty dollars apiece at the time, though lumber shifts with the market. The rope tub planter cost $4.99 for the tub itself, plus adhesive and sisal, and the source reporting back after three winters makes it the cheapest long-term data point I have.
What the store charges for a finished large planter depends on material and height, but the spread below shows where these projects sit.
| Project | Starting Material Cost | Finished Size | Upkeep Risk |
|---|---|---|---|
| Microcement over form | ~$0.60 per pot (bulk) | Medium, limited by form | Cracking in freeze if unsealed |
| Cedar picket boxes | ~$27 per 3×6×1 ft box | Large, customizable | Rot at soil line over years |
| Rope-wrapped tote | $4.99 tub base | Medium, flexible | UV breakdown of plastic |
The microcement only stays cheap if you need volume. For one or two statement planters, the leftover bag becomes clutter. The rope tub keeps money lowest per unit, but the plastic core is a gamble past three hard winters. Cedar splits the difference: replaceable, scalable, and the picket grade accepts rough handling.
Frequently Asked Questions
What materials can I use to make large outdoor planters?
Plastic storage tubs, wood pallets, old furniture, tires, and cinder blocks all work well for cheap large outdoor planters. The article covers each in detail: a $4.99 storage tub wrapped in rope, pallets disassembled into cedar-style boards, dresser shells with holes cut for drainage, painted tires that insulate roots, and cinder blocks stacked into planting grids. Cedar fence pickets at about $1.58 each and microcement at roughly $30 per bag are also strong options depending on whether you want wood boxes or a concrete look.
How do I ensure proper drainage in my DIY planters?
Drill holes in the bottom first thing after cleaning and cutting any container. For stumps, angle the bit so water exits the side rather than clogging against the grain below. Line the inside with landscaping fabric stapled to the walls to keep soil from packing against drains and to block weeds. A 70/30 blend of potting soil to compost, with straw or bark in the bottom third, drains well without filling the whole void with bagged mix.
What are some creative upcycling ideas for planters?
Old paint cans with drips still running down the sides, toy trucks parked permanently as succulent beds, and vinyl shutters split and spiked into corner planters all reuse items that would otherwise head to landfill. The article also notes yard sale and auction scores: a 24-inch planter won for $2 and refreshed with scrubbing and exterior paint skips the build entirely. Skip anything with cracks reaching the soil line, since freeze-thaw will open them wider by August.
