How to Build Custom Greenhouse Benches for Your Garden

Greenhouses are a fantastic addition to any gardener’s arsenal. They provide a regulated environment for plants, protecting them from severe weather and pests. Optimizing the space inside is essential to make the most of your greenhouse. One way to do this is by building custom greenhouse benches. In this blog post, we’ll guide you through constructing your greenhouse benches, helping you create a functional and efficient space for your garden.

Materials You’ll Need


Here’s a list of materials you’ll need to build custom greenhouses benches for your garden:


Choose weather-resistant wood like cedar or redwood. The amount of lumber will depend on the size and number of benches you plan to build.


Opt for corrosion-resistant screws to ensure the longevity of your benches. You’ll need various sizes, including ones for attaching the legs and others for securing support and bracing.


A circular or miter saw will help cut the lumber to size. You may also need a coping saw or jigsaw for more intricate cuts.

Measuring Tape And Pencil

It is essential for accurate measurements and marking where you need to cut and attach pieces.

Drill And Drill Bits

You’ll need these to make holes where screws go and drive the screws into the wood.


Ensure your benches are flat and even, which is crucial for the stability of the benches and the safety of your plants.


For smoothing rough edges and surfaces, ensure that your benches are safe to touch and work with.

Wood Sealer Or Paint (optional)

To keep moisture out of the wood and extend its life. Paint can also add a decorative touch to your greenhouse benches.

Step-by-Step Guide


Here’s a step-by-step guide on how to build custom greenhouse benches for your garden:

Step 1: Design

Before you start building your greenhouse benches, you need a clear plan. Decide on the size and height of your benches. Consider the space in your greenhouse and the plants you wish to cultivate. A typical greenhouse bench is around 36 inches high and 2-3 feet wide.

Step 2: Cut the Lumber

Measure and cut the lumber into the necessary pieces. You’ll need two long pieces for the top (the seat), two for the legs, and several shorter pieces for support and bracing. Be precise with your measurements to ensure a sturdy bench.

Step 3: Assemble the Frame

Begin by attaching the legs to the top pieces. Use screws to secure them in place. Ensure the legs are level and at the desired height. Repeat this process for all your benches. A helping hand or clamps can be useful to hold pieces in place while you work.

Step 4: Add Supports

Add support pieces underneath the top (seat) to strengthen the frame and prevent sagging. Space them evenly across the length of the bench. Secure them with screws.

Step 5: Bracing

For added stability, attach diagonal bracing between the legs. This will prevent wobbling and make your bench more robust. Angle the braces from the top of one leg to the bottom of the opposite leg and secure with screws.

Step 6: Sand and Finish

Sand the rough edges and surfaces of your bench to prevent splinters and create a smooth, polished finish. You can also use a wood sealant or paint to protect the wood from dampness and improve its appearance. Allow the sealer or paint to dry completely before moving on.

Step 7: Arrange in Your Greenhouse

Once your benches are built and finished, arrange them in your greenhouse. Leave enough space between them for easy access and maintenance. Consider the layout carefully to maximize space and sunlight exposure for your plants.

Step 8: Accessorize

Consider adding shelves, hooks, or trays to your benches for organizing tools, pots, and other gardening supplies. These additions can make your greenhouse benches even more functional and convenient.

Maintenance Tips


Maintaining your custom greenhouse benches is critical for them to remain functioning and in good shape over time. Here are some maintenance tips to help you keep your benches in top shape:

Regular Cleaning

Keep your greenhouse benches clean by regularly removing debris, dirt, and fallen leaves. A broom, brush, or leaf blower can be helpful tools. Keeping the bars clean helps prevent the buildup of pests and diseases.

Inspect for Damage

Periodically inspect your benches for any signs of damage or wear and tear. Check for loose screws, cracked wood, or any structural issues. Address these issues as soon as possible to avoid further damage.

Tighten Loose Screws

Screws can loosen over time due to changes in temperature and humidity inside the greenhouse. To maintain bench stability, tighten loose screws using a screwdriver or drill.

Wood Maintenance


Address any indicators of wood damage, such as rot or splintering, as soon as possible. Replace damaged wooden components to prevent further deterioration. Sand down any splinters to keep the surface safe for handling and working.

Reapply Wood Sealant or Paint

If you’ve applied a wood sealer or paint to protect your benches, periodically check the condition of the finish. Over time, the finish may wear off due to exposure to moisture and sunlight. Reapply sealant or paint as necessary to protect the wood from these elements.

Check for Rust

Check for signs of rust if you use metal hardware, such as screws and brackets. Rust can weaken the integrity of the hardware. Replace any rusty hardware to maintain the structural stability of your benches.

Adjust for Plant Growth

As plants grow, they may outgrow the space allocated on the benches. Be prepared to adjust the layout of your benches or add additional shelving or support as needed to accommodate your growing plants.

Pest and Disease Management


Look for any signs of pests or diseases on or around your greenhouse benches. Isolate affected plants and take appropriate measures to prevent the spread of infestations.

Organize and Declutter

Regularly review the organization of your benches. Remove any unused or unnecessary items to maintain an efficient workspace. To simplify your tasks, keep your gardening tools, pots, and supplies well-organized.

Wrap Up

Building custom greenhouse benches is a rewarding DIY project that can greatly enhance your gardening experience. They provide a stable and organized space for your plants, tools, and supplies. By following the steps outlined in this guide and taking care of your benches, you can create a flourishing garden oasis within the confines of your greenhouse. Happy gardening!