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Build a Vertical Planter from a Pallet and Save Your Wall Space

In Australia, where the back garden often doubles as the entertaining area and the average house block seems to shrink every decade, growing up rather than out has become a genuine fix for keen green thumbs. A wall-mounted vertical planter turns a wasted stretch of paling fence, brick sideway or sunny courtyard wall into a productive strip of herbs, succulents or flowering natives. It also suits renters and unit dwellers in places like Sydney's inner west, Brisbane's tiny terraces or Perth's newer subdivisions, where outdoor space is measured in square metres rather than acres.

The pallet version of this idea has earned plenty of fans because the timber is usually free, sturdy enough to hold wet soil and already shaped in a way that suits a grid of planting pockets. Sourcing one from behind a Bunnings store, your local transfer station or a mate who has just finished a deck renovation keeps it out of landfill and gives the build a satisfying second life. With a few basic tools, some landscape fabric and a couple of arvo hours, you can put together something that costs a fraction of a flat-packed store-bought planter.

What follows is a walkthrough of the whole job, from picking a safe pallet through to choosing plants that will actually cope with an Australian summer. There is also a quick comparison covering the major climate zones, so you are not guessing when the heat cranks up in February or the wet season settles over the tropics.

Sourcing a safe pallet

Not every pallet sitting by a skip bin is safe to handle or to grow food in. Pallet timber gets treated for international shipping and the marking on the side tells you everything. Look for the two-letter code stamped across the timber: HT means heat-treated, which is the safe option for gardens, while MB indicates methyl bromide fumigation, a chemical you do not want leaching into your coriander or strawberries.

If the pallet has no marking at all, or the wood feels oily, smells harsh or shows dark smudges of unknown origin, leave it for the next person. Reclaimed pallets from Australian freight are usually fine because heat treatment is mandatory under local standards, but roadside finds deserve a second look. Give the timber a once-over with a stiff brush, knock out any loose nails with a hammer and let it sit in the sun for a day or two before you cut. Aussie sun is brutal on bacteria and any stray bugs hiding in the boards.

Local sourcing is easier than you might think. The tip shop at your council's waste depot, Marketplace listings in your suburb, or a quick chat with the tradies at the local Bunnings often turns one up within a weekend. Some recycling yards in places like Revesby, Campbellfield or Dandenong even let you grab a couple for a gold coin donation.

Tools and materials for the build

This is not a job that demands a workshop full of gear. A cordless drill with driver bits, a circular saw or a good handsaw, a staple gun and a tape measure will cover almost everything. Toss in some sandpaper, a square and a pencil for marking up, and you are ready to start cutting.

For the structural screws, galvanised or stainless will hold up to coastal air in places like the Mornington Peninsula, Byron Bay or Adelaide's beachside suburbs, where salty breezes eat unprotected steel in a single summer. Cheap landscape fabric from the discount shop tears after one wet season, so spend a few extra dollars on heavy-duty material from a landscape supplier. None of these bits and pieces has to be expensive, but the dodgy stuff comes back to bite you.

Key items to line up before you start

Cutting and assembling the frame

Lay the pallet flat on a couple of sawhorses or scrap timber so you are not bent over a low bench. Most standard pallets are around 1.2 metres tall and just under a metre wide, which suits a brick wall, a fence panel or a sunny sideway in a townhouse block. Decide whether you want the planter to keep the full pallet footprint or trim it down to one half for a narrower spot, perhaps next to a side gate or beside the outdoor barbie.

Start by pulling out the nails or screws holding the front slats in place. They are usually the ones with the widest gaps, perfect for creating planting pockets. Set the removed slats aside, then cut the back of the pallet into a single solid panel using your circular saw, removing any slats that stick out further than the rest. Sand everything down, especially the rough edges, until the wood is smooth enough that it will not tear the fabric. The beauty of reclaimed timber is the weathered patina, so do not sand the character off entirely.

Cut your landscape fabric so it covers the back and wraps over the bottom and the front edges where the slats will sit. Staple it along the back first, pulling it taut, then fold over the front and staple below where the new slats will go. Reattach the slats you removed across the front of each pocket opening, screwing them back in so they hold the soil in. The pockets end up facing forward, with a fabric pouch behind each row for the soil.

If you want a deeper planter for larger plants like cherry tomatoes or strawberries, add a second row of slats at the top to raise the lip. Drill three or four drainage holes through the lowest section of fabric so water does not pool and rot the roots, especially during a humid La Niña summer in the subtropics.

Plants for different Australian climates

Australia throws a fair bit at a gardener. Hobart and the ranges around Ballarat deal with cold snaps and frost, while Darwin and Cairns sit in the steamy tropics. Perth, Adelaide and parts of Melbourne enjoy a Mediterranean pattern of dry summers and wet winters, and the wide brown belt across the interior barely registers a drop for months. Picking plants that match your postcode saves water, work and a lot of heartbreak.

The comparison below covers a handful of popular choices across the major climate zones. Use it as a starting point and ring your local council's community garden or native plant group for advice specific to your patch before buying in bulk.

Plant Tropical North Subtropical East Mediterranean South Cool Temperate
Strawberries Struggle with humidity, prone to rot Decent yield with morning sun Excellent yields, classic choice Good in pots, watch for late frost
Native violets Thrive in shade, damp conditions Year-round foliage Need extra water in dry summers Hardy in sheltered spots
Rosemary Grows leggy in humidity Performs well with drainage Loves the dry summers Tolerant of cold once established
Kangaroo paw Hybrid cultivars handle humidity Performs strongly with airflow Needs well-drained soil Marginal in heavy frost areas
Lettuce and leafy herbs Bolts fast in heat, pick loose-leaf Reliable through mild winters Best grown in autumn-spring Excellent through cool months
Lomandra and grass tufts Lush with regular water Settles in quickly Tough in dry spells, great texture Handles cold and frost

A simple drip kit from the local irrigation shop, plumbed into a tap timer, keeps the planter happy through a heatwave. Add a thin layer of sugar-cane mulch or gravel on top of each pocket to slow evaporation and keep the roots cool. Heirloom lettuces in the humid tropics turn bitter within days, while climbing peas in northern Queensland barely survive outside winter, so adjust your seasonal swaps to suit your region rather than fighting the local climate.

Reliable picks for a quick first planting

Mounting and caring for the finished piece

How you fix the planter to the wall depends on what the wall is made of. Brick and concrete need masonry anchors or sleeve bolts, colorbond fencing suits timber screws into the rails, and a timber paling fence is happy with long exterior screws straight through into the studs or rails. If you are renting, weigh the planter down on a sturdy base against the wall instead of drilling into brick, which tends to upset bond cleaners at the end of a lease.

Check with your local council before fixing anything over a metre high to a front fence in many suburbs around Melbourne, Sydney and Brisbane, because heritage overlays and pool safety rules often have a say. Rules around pool areas are especially strict: any climbable structure near a pool barrier needs to be designed out so little ones cannot use it as a step up.

Maintenance is mostly a matter of refreshing the soil each spring, replacing any pockets of fabric that have started to break down and tightening the mounting brackets once a year. A fresh coat of exterior timber oil every couple of years keeps the pallet from greying off too much and adds another layer of defence against the kind of rain that hammers the east coast during a southerly buster. Feed the plants with a slow-release fertiliser or a worm tea brewed from your kitchen scraps, and the whole setup will keep rewarding you with fresh leaves, flowers and the occasional snack from the garden without taking up half the backyard.

Grab that ladder, knock the cobwebs off the drill and turn an old pallet into the most useful bit of garden furniture you will own this season. With a small handful of materials from the local hardware and a couple of afternoons, you can have fresh herbs at arm's reach, a wall alive with colour and a front fence the neighbours will be quietly jealous of. It is a straightforward build, a true Aussie upcycle, and a great way to make the most of whatever outdoor space you have got, no matter how tight the block or how brutal the coming summer looks.