G’day, fellow green thumbs! We understand the challenge of creating timber planter boxes. It can be tricky to determine the right design, select the best materials, and construct something durable.
We’ve done extensive research for you. Our findings suggest that using locally sourced Macrocarpa Cypress, such as the range available from Bloom Box Products, is an excellent choice for durability.
In this guide, we’ll cover everything – from timber selection to box design and assembly. We’ll also include some top tips to maintain your planters in great condition for years to come.
Are you ready to get started?
Key Takeaways
- Choose durable timber like Macrocarpa Cypress or treated pine for long-lasting planter boxes. Hardwoods like Ironbark cost more but offer top strength and looks.
- Include proper drainage by drilling holes in the base, adding a gravel layer, and using a heavy-duty black plastic lining ($6 per linear metre) to protect the wood.
- Add features like built-in benches, multi-levels, or decorative finishes to customise your planter. A BARC bench seat costs $1,445 for a luxe touch.
- Maintain your planter box with regular cleaning, inspections, and reapplying protective finishes every 1-4 years depending on exposure.
- Consider advanced options like self-watering systems or multi-tiered designs to maximise space and plant variety in your garden.
Selecting the Right Timber
Picking the right wood for your planter box is key. We’ll guide you through the best options for durability and looks.
Types of timber suitable for planter boxes
We love creating beautiful planter boxes for our gardens. Let’s explore some great timber options that work well for these outdoor projects.
- Macrocarpa Cypress: This locally sourced timber is perfect for planter boxes. It’s naturally resistant to decay and insects, making it a top choice for outdoor use.
- Ironbark/Greygum: These hardwoods are incredibly durable and can withstand harsh weather. They’re ideal for heavy-duty planter boxes that need to last.
- Treated Pine: A budget-friendly option that’s still resistant to rot and pests. It’s easy to work with and readily available in Australia.
- Western Red Cedar: Known for its natural oils that protect against decay, this timber is lightweight yet strong. It’s a great choice for larger planter boxes.
- Jarrah: This Australian hardwood is naturally resistant to rot and termites. It’s dense and durable, perfect for long-lasting planter boxes.
- Spotted Gum: Another Aussie favourite, this timber is tough and weather-resistant. It’s great for planter boxes in exposed areas.
- Merbau: This tropical hardwood is naturally oily, making it resistant to decay. It’s ideal for planter boxes in humid climates.
- Blackbutt: A native Australian timber that’s naturally fire-resistant. It’s a smart choice for planter boxes in bushfire-prone areas.
Considerations for durability and aesthetics
Durability and looks matter when picking timber for planter boxes. We want our boxes to last and look great. Hardwoods like Ironbark or Greygum offer top-notch strength and beauty.
These timbers resist rot and pests, making them ideal for outdoor use. Their natural colours and grain patterns add charm to any garden.
For a budget-friendly option, treated pine works well too. It’s cheaper than hardwoods but still holds up against the elements. A 450 mm treated pine planter layer costs about $135, while an Ironbark one runs $391.
The price difference is clear, but both serve their purpose. Treated pine takes paint well, allowing for custom colours to match your garden’s style.
The right timber choice balances longevity with visual appeal.
We can’t forget about protective finishes. A good sealant or oil keeps moisture out and preserves the wood’s natural beauty. This step is crucial for extending the life of your planter box.
Next, let’s look at how to design your planter box to fit your space perfectly.
Designing Your Planter Box
Designing your planter box is a fun and creative process. We’ll guide you through choosing the right size and shape for your space, and show you how to add useful features like proper drainage.
Determining size and shape based on location
We need to think about where our planter box will go before we decide on its size and shape. For small spaces like balconies, a compact design like the Balcony Box starting at $630.00 AUD might be perfect.
Larger areas allow for bigger boxes, such as the BARC square planter bench combo at $2,300.00 AUD. We should measure our space and consider how much room we want for plants versus walking around.
The shape of our planter box matters too. Square or rectangular boxes fit well in corners and along walls. Round or curved shapes can soften hard edges in a garden. If we’re short on ground space, we might look at the Herb Senior Café planter box on wheels for $730.00 AUD.
This lets us move our plants around easily to catch the sun or make room for guests.
Incorporating functional features like drainage
Drainage is a key feature in any timber planter box. We always include proper drainage to keep our plants healthy and thriving. A simple yet effective method involves drilling holes in the base of the box.
These holes allow excess water to escape, preventing root rot and other moisture-related issues.
We also like to add a layer of gravel or small stones at the bottom of our planter boxes. This layer creates extra space for water to drain away from the soil. On top of the gravel, we place a heavy duty black plastic lining.
This lining acts as a barrier, keeping soil in while letting water pass through.
Good drainage is the foundation of a healthy planter box.
For added protection, we often use a nonwoven geofabric drainage lining. This special fabric allows water to drain while keeping soil and roots in place. It’s a great option for larger planter boxes or those with delicate plants.
By including these drainage features, we ensure our timber planter boxes provide the best environment for our plants to grow.
Tools and Materials Needed
Building a timber planter box requires a few key tools and supplies. You’ll need basic carpentry gear like a saw, drill, and measuring tape. Don’t forget essentials such as screws, wood glue, and a protective finish for your project.
Basic carpentry tools
We’ll need some basic carpentry tools to build our timber planter boxes. Here’s a list of essential items to gather before we start our project:
- Measuring tape: For accurate measurements of timber and box dimensions.
- Pencil: To mark cutting lines and join points on the timber.
- Square: Ensures our corners are at right angles for a sturdy box.
- Hand saw: Cuts timber to size for smaller projects.
- Power saw: Speeds up cutting for larger planter boxes.
- Drill: Makes holes for screws and drainage.
- Screwdriver: Tightens screws for secure joints.
- Hammer: Drives nails into timber for extra strength.
- Sandpaper: Smooths rough edges and surfaces.
- Safety gear: Includes goggles, gloves, and dust mask for protection.
- Level: Checks if our planter box sides are even.
- Clamps: Holds timber pieces together while we work.
- Chisel: Carves out joints or notches in the wood.
- Wood glue: Adds extra strength to joints.
- Workbench: Provides a stable surface for cutting and assembly.
Supplies like screws, nails, and protective finishes
Building a timber planter box requires the right supplies. Let’s look at the essential items you’ll need for your project:
- Screws: Choose stainless steel or galvanised screws for rust resistance. Use 8-gauge screws for most joints and 10-gauge for heavier loads.
- Nails: Opt for hot-dip galvanised nails for outdoor use. 40mm nails work well for most planter box construction tasks.
- Wood glue: A waterproof wood adhesive adds strength to joints. Look for products rated for exterior use.
- Protective finishes: Apply a wood preservative to guard against rot and insects. Follow up with an exterior-grade stain or paint for added protection and style.
- Waterproofing membrane: Line the inside of your planter with a heavy-duty plastic sheet or pond liner to prevent water damage.
- Drainage materials: Add a layer of gravel or broken pottery at the bottom of your planter for proper drainage.
- Timber supplies: Choose weather-resistant wood like treated pine or hardwoods for longevity. Pre-cut boards save time and effort.
- Personal protection gear: Don’t forget safety glasses, gloves, and a dust mask when working with wood and finishes.
- Angle iron and bolts: Many planter box kits come with pre-drilled angle iron and galvanised bolts for easy assembly.
- Concrete or cement: Use these for a sturdy base if you’re building a large, permanent planter.
Step-by-Step Construction Process
Building your own timber planter box is a fun and rewarding project. We’ll guide you through each step of the process, from cutting the wood to adding the final touches. Our easy-to-follow instructions will help you create a beautiful and sturdy planter box for your garden.
Cutting timber to size
We’ll guide you through cutting timber to size for your planter box project. This crucial step ensures your box fits perfectly in its intended space and looks great.
- Measure twice, cut once: Always double-check your measurements before making any cuts.
- Use the right saw: A circular saw works well for straight cuts on larger pieces.
- Mark your cutting lines: Draw clear, straight lines on your timber using a pencil and square.
- Secure the timber: Clamp your wood to a sturdy work surface to prevent movement while cutting.
- Wear safety gear: Put on safety glasses and ear protection before you start sawing.
- Cut slowly and steadily: Let the saw do the work, don’t force it through the timber.
- Sand the cut edges: Smooth any rough spots with sandpaper for a clean finish.
- Check your cuts: Measure the cut pieces to ensure they match your planned dimensions.
- Adjust as needed: If a piece is slightly too long, trim it down. It’s better to cut less than more.
- Prepare for assembly: Group your cut pieces by size, ready for the next construction step.
Assembling the box structure
We’re ready to put our planter box together. Let’s start with the main steps for assembling the structure.
- Lay out the base: Place the bottom piece on a flat surface.
- Attach side panels: Fix the side panels to the base using bugle head screws.
- Secure corners: Join the corners with screws for added strength.
- Add support braces: Install braces inside the box for extra stability.
- Check for square: Measure diagonals to ensure the box is square.
- Fit the top trim: Attach trim pieces to the top edges for a neat finish.
- Install drainage holes: Drill holes in the base for water to escape.
- Sand rough edges: Smooth any sharp corners or splinters.
- Apply sealant: Coat the inside with a waterproof sealant to protect the wood.
- Line the box: Add a permeable liner to help with drainage and soil retention.
Now that we’ve built the box, it’s time to think about adding some special features.
Adding drainage and protective lining
Proper drainage and lining are crucial for healthy plants in timber planter boxes. We’ll guide you through the steps to add these essential features to your DIY project.
- Create drainage holes: Drill several 1-2 cm holes in the base of your planter box, spaced about 15 cm apart. This allows excess water to escape, preventing root rot.
- Add a layer of gravel: Pour a 5 cm layer of small stones or gravel at the bottom of the box. This helps water flow freely to the drainage holes.
- Install landscape fabric: Cut a piece of landscape fabric to fit the inside of the box. Place it over the gravel layer to stop soil from clogging the drainage.
- Apply protective lining: Use heavy-duty black plastic lining to protect the timber from moisture. It costs about $6 per linear metre and greatly extends the life of your planter box.
- Secure the lining: Staple or tack the plastic lining to the inside walls of the box, leaving some slack at the bottom for drainage.
- Cut drainage slits: Make small cuts in the plastic lining where it covers the drainage holes to allow water to pass through.
- Fill with soil: Add your chosen potting mix or garden soil, leaving about 5 cm of space at the top for watering and plant growth.
Customisation Ideas for Your Planter Box
Timber planter boxes offer endless options for personal flair. You can add built-in seating or create multi-level designs to suit your space and style.
Adding benches or additional levels
We love adding benches and extra levels to timber planter boxes. These features make our gardens more useful and beautiful.
- Build a simple bench by extending the sides of your planter box. Use sturdy timber boards to create a seat that’s about 45 cm wide and 40 cm high.
- Add armrests to your bench for extra comfort. Cut two short pieces of timber and attach them to the ends of your seat.
- Create a multi-level planter by building smaller boxes on top of a larger base. This design works well for herbs or flowers that need different soil depths.
- Install a fold-down bench on one side of your planter. Use hinges to attach a seat that can be raised or lowered as needed.
- Make a corner bench by joining two planter boxes at a right angle. This setup offers more seating and planting space in a compact area.
- Add a trellis to one end of your planter box for climbing plants. This vertical element adds height and interest to your garden design.
- Build a storage bench by creating a lift-up seat with a waterproof compartment underneath. It’s perfect for keeping garden tools handy.
- For a luxe touch, consider adding a BARC bench seat to your planter setup. At $1,445.00 AUD, it’s a pricey but stylish option for keen gardeners.
Decorative finishes and colour options
Now that we’ve covered adding benches and levels, let’s explore how to make our planter boxes look great. Decorative finishes and colour options can turn a simple box into a garden showpiece. Here’s how to jazz up your timber planter:
- Paint it bold: Choose bright colours like the Alexi Dark Green planter pot for a pop of colour. This shade costs $48 for a 140 x 205 mm pot and adds a fresh look to any garden.
- Go natural: Stain the timber to bring out its grain. This keeps the wood look while adding protection from the weather.
- Add texture: Reeded edges can give your planter a fancy touch. For $18 per layer, you can add 10 mm reeded edges to your box.
- Mix materials: Combine timber with metal bands or corner pieces for a modern industrial look.
- Use patterns: Paint stripes or geometric shapes on your planter for a fun, eye-catching design.
- Try whitewash: A light wash of white paint, like on the Alexi White planter pot, can brighten up dark timber. This option also costs $48 for a 140 x 205 mm pot.
- Go two-tone: Paint the top edge a different colour from the rest of the planter for a simple yet stylish look.
- Add mosaic tiles: Stick colourful tiles to the sides of your planter for a unique, artsy finish.
- Use rope wrapping: Wrap thick rope around the planter for a coastal or nautical theme.
- Try colour blocking: Paint each side of the planter a different colour for a bold, modern look.
Maintenance Tips for Timber Planter Boxes
Keeping your timber planter boxes in top shape is key to their longevity. Regular care will protect your investment and keep your plants thriving for years to come.
Routine cleaning and inspection
We can’t stress enough how crucial routine cleaning and inspection are for timber planter boxes. These simple tasks help our boxes last longer and keep our plants healthy. We should set up a regular schedule to check our planters, ideally every few months.
During our inspections, we’ll want to look for signs of wear or damage. This includes checking for loose screws, cracks in the wood, or any spots where water might be seeping in. We’ll also need to clean out any dead leaves or debris that have built up.
This stops pests from making homes in our planters and keeps air flowing around our plants’ roots.
For cleaning, we’ll use a soft brush to sweep away dirt and a damp cloth to wipe down the wood. If we spot any mould or mildew, we can mix up a mild soap solution to scrub it away.
After cleaning, we should let the box dry fully before we add new plants or soil. This routine care will keep our timber planter boxes looking great and functioning well for years to come.
When to reapply protective finishes
Protective finishes play a crucial role in keeping our timber planter boxes looking great and lasting longer. We need to reapply these coatings every few years to maintain their effectiveness.
The exact timing depends on factors like sun exposure, rainfall, and the type of finish used.
For most outdoor timber planters, we suggest checking the finish annually. Look for signs of wear such as fading, peeling, or water no longer beading on the surface. If we spot these issues, it’s time to reapply.
In harsh Aussie conditions, we might need to recoat every 1-2 years. In more sheltered spots, we can often stretch this to 3-4 years.
Our timber planters deserve the same care as our prized plants. Regular upkeep, including timely reapplication of protective finishes, ensures they’ll stay beautiful for years. This maintenance also protects our investment, much like how self-watering pots from Northcote Pottery, priced at $22.95, help care for our plants.
Advanced Features
We can take our planter boxes to the next level with smart features. Self-watering systems and multi-tiered designs offer exciting options for keen gardeners.
Integrating self-watering systems
Self-watering systems can be a game-changer for our timber planter boxes. These clever setups use a water reservoir at the bottom of the box, allowing plants to draw moisture as needed.
This method keeps soil consistently moist without overwatering, which is great for plant health. It also means less frequent watering for us, making it perfect for busy gardeners or those who travel often.
Adding a self-watering system to our planter box is simpler than it sounds. We’ll need to create a false bottom in the box, leaving space for the water reservoir. Then, we’ll add a wicking system to draw water up into the soil.
This could be as simple as a piece of rope or more complex like perforated pipes. Next, we’ll talk about the step-by-step process of building our timber planter box.
Building multi-tiered planters for different plants
We love multi-tiered planters for their versatility and space-saving design. These clever structures let us grow a variety of plants in one compact area. We can put sun-loving herbs on top and shade-tolerant ferns below.
This smart setup makes the most of vertical space, perfect for small gardens or balconies.
Building a multi-tiered planter is a fun weekend project. We start with a sturdy base, often using treated timber for durability. Then we add levels, each slightly smaller than the one below.
We make sure to include drainage holes in each tier to prevent waterlogging. For those who want a ready-made option, the VegTrug Windsor Aqua Tower Plant Stand is a great choice at $65.
Multi-tiered planters offer endless customisation options. We can paint them to match our outdoor decor or leave the natural wood for a rustic look. Some gardeners add built-in irrigation systems for easy watering.
Others create themed tiers, like a salad garden or a succulent display. With a bit of creativity, these planters become both functional and eye-catching features in our gardens.
DIY Challenges and Solutions
Building your own timber planter box can throw up some tricky issues. We’ll share common problems and their fixes to help you succeed in your DIY project.
Common issues and how to resolve them
We’ve built many timber planter boxes and faced our share of problems. Here’s a list of common issues and how to fix them:
- Poor drainage: Drill extra holes in the base. Add a layer of gravel at the bottom to improve water flow.
- Rotting wood: Use rot-resistant timber like cedar or treated pine. Apply a waterproof sealant every year.
- Unstable structure: Reinforce corners with metal brackets. Use thicker timber for larger boxes.
- Soil washing out: Line the inside with landscape fabric. Leave small gaps between planks to let water drain.
- Uneven growth: Rotate your planter box regularly. This ensures all plants get equal sunlight.
- Pest invasions: Install a fine mesh screen at the bottom. This keeps out unwanted critters.
- Splitting wood: Pre-drill holes before inserting screws. This prevents the timber from splitting.
- Fading colour: Apply a UV-resistant stain or paint. Reapply every two to three years to maintain the look.
- Warping: Use kiln-dried timber. Seal all sides of the wood before assembly to prevent moisture absorption.
- Root-bound plants: Choose a box size that suits your plants’ growth. Repot or divide plants as needed.
Tips for first-time builders
After addressing common issues, we’ll focus on helping first-time builders succeed. We’ve compiled some key tips to make your first planter box project easier. Our Melbourne workshop offers custom design solutions, adapted to your needs.
This service can be an excellent starting point for beginners unsure about measurements or design choices.
For those keen to DIY, we recommend starting small. A simple box design is ideal for learning the basics. Always measure twice and cut once to avoid wasting materials. It’s also prudent to use a wood sealer to protect your creation from the elements.
If you’re not confident in your skills, we provide delivery and installation services in Melbourne for $250. This option ensures your planter box is set up correctly from the start.
Conclusion
Building your own timber planter box is a rewarding project. We’ve covered the basics, from choosing wood to adding custom features. With the right tools and materials, you can create a unique garden piece.
Regular care will keep your planter looking great for years. Now you’re ready to start your own timber planter box adventure. Happy building and growing!
FAQs
1. What materials do I need to build a timber planter box?
You’ll need treated pine or hardwood boards, galvanised screws, a drill, saw, measuring tape, and sandpaper. Choose timber that resists rot and pests for longer-lasting planters.
2. How do I ensure proper drainage in my planter box?
Drill several small holes in the base of your planter box. Space them evenly, about 10-15 cm apart. Add a layer of gravel or small rocks at the bottom before filling with potting mix.
3. What size should I make my timber planter box?
The size depends on your available space and the plants you want to grow. A common size is 90 cm long, 60 cm wide, and 45 cm deep. This suits most plants and is manageable for moving if needed.
4. How can I protect my timber planter box from weather damage?
Apply a water-resistant sealant or outdoor wood stain to all surfaces of your planter box. Reapply annually to maintain protection. Elevate the box slightly off the ground to prevent direct contact with moisture.