Pallet Garden: How to Build a Vertical Planter on a Budget

A single shipping pallet, some landscape fabric, and a bag of potting soil — that is all it takes to build a pallet garden that grows herbs, flowers, or salad greens in just 2 square feet of wall space. Vertical pallet planters have become one of the most popular DIY garden projects for good reason: the raw material is often free, the build takes about an hour, and the finished product turns a bare fence or wall into a living display.

Finding the Right Pallet

Not all pallets are safe for growing edible plants. Look for pallets stamped with “HT” (heat treated), which means they were sanitized using heat rather than chemicals. Avoid pallets stamped “MB” (methyl bromide) — this is a toxic fumigant that can leach into soil.

Good places to find free HT pallets:

• Garden centers and nurseries (they receive plant shipments on pallets weekly)
• Small local businesses that receive freight deliveries
• Hardware stores — ask the receiving dock manager
• Online marketplaces like Craigslist and Facebook Marketplace under “free” listings

Choose a pallet with boards that are intact, not split or rotting. Standard US pallets measure 48 x 40 inches — a generous planting area once you stand it upright.

Tools and Materials

You likely own most of what you need already. Here is the full list:

• One HT-stamped pallet in good condition
• Landscape fabric or heavy-duty weed barrier (a 3 x 50 foot roll costs about $10)
• Staple gun with 3/8-inch or 1/2-inch staples
• 2 cubic feet of quality potting mix (about $8-$12)
• Sandpaper or a palm sander (80-grit) for smoothing rough spots
• Exterior wood stain or paint (optional, for appearance and weather protection — $10-$15 for a quart)
• Plants or seeds

Total cost if you source a free pallet: under $30.

Step-by-Step Build Instructions

1. Sand the pallet: Remove splinters and rough spots with 80-grit sandpaper, focusing on the face that will be visible and any edges you will touch regularly. Wipe off dust with a damp cloth.
2. Stain or paint (optional): Apply one coat of exterior wood stain for a natural look or exterior paint for a pop of color. Let it dry completely (24 hours) before planting. Use a product labeled safe for garden use if growing edibles.
3. Line the back and sides with landscape fabric: Lay the pallet face-down. Cut a piece of landscape fabric large enough to cover the entire back plus wrap around the bottom and sides. Staple the fabric to the back of the pallet boards every 3-4 inches, creating pockets between each slat row. The fabric holds the soil in while allowing water to drain through.
4. Reinforce the bottom: Fold extra fabric over the bottom of the pallet and staple securely. This is where gravity pulls the most soil, so use extra staples here.
5. Fill with potting mix: Flip the pallet face-up and lay it flat on the ground. Pour potting mix between the slat openings, working it into each pocket. Shake the pallet gently to settle the soil and add more until each section is firmly packed.
6. Plant while flat: Tuck small starts (not seeds) into the soil between the front slats. Space plants 4-6 inches apart. Water gently.
7. Let roots establish: Keep the pallet horizontal for 2-3 weeks, watering regularly. This gives the roots time to anchor into the soil so nothing falls out when you stand it up.
8. Stand it up: Lean the pallet against a wall or fence, or secure it with L-brackets screwed into wall studs. Make sure it tilts slightly backward (about 10-15 degrees) for stability.

Best Plants for Pallet Gardens

Shallow-rooted, compact plants thrive in the narrow soil pockets of a pallet garden.

• Herbs: Basil, thyme, oregano, chives, and parsley. Plant these in the middle and upper rows where they get the most light.
• Lettuce and greens: Leaf lettuce, spinach, and arugula grow fast and stay small. Perfect for the lower rows that get slightly more shade.
• Succulents: Hens-and-chicks, sedums, and echeveria create a stunning living wall art piece that needs almost no watering. Ideal for a south-facing wall.
• Strawberries: Compact day-neutral varieties like Albion produce fruit from spring through fall and trail beautifully over the pallet slats.
• Annual flowers: Pansies, petunias, and marigolds add season-long color. Mix colors for a vibrant display or stick to a single palette for a polished look.

Watering Your Pallet Garden

Vertical planters dry out faster than ground-level beds because gravity pulls water downward through the pockets quickly. Water from the top slowly, allowing moisture to seep into each row before adding more. In hot weather (above 85 degrees F), check the soil daily — the top row dries out fastest.

A drip irrigation line threaded along the top of the pallet and connected to a battery-operated timer ($15-$25) automates watering completely. This is worth the small investment if you travel or simply want to eliminate the daily chore.

Mounting and Placement Tips

A fully planted and watered pallet garden weighs 60-100 pounds. Mount it securely using heavy-duty L-brackets or French cleats into wall studs or masonry anchors. Never lean an unsecured pallet against a wall in a windy location — it will topple and damage plants.

Place the pallet where it receives the appropriate sunlight for your plants: full sun (6+ hours) for herbs, vegetables, and most flowers; part shade (3-4 hours) for lettuce and ferns. South and west-facing walls get the most intense sun; east-facing walls provide gentler morning light.

Seasonal Care and Longevity

An untreated pallet lasts 2-3 growing seasons outdoors before the wood begins to deteriorate. Staining or painting extends the life to 4-5 seasons. At the end of the growing season, you can disassemble the planting, compost the spent soil, and store the pallet in a garage or shed over winter. Replace the landscape fabric each spring — it degrades with UV exposure and will not hold soil reliably after one full season. With annual refreshing, a pallet garden stays productive and attractive for years at almost no recurring cost.