Tools and Materials
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Build a Garden Pillar
Your block pillar construction can be as simple or as complicated as you like, depending on your skill level and how much time you’re willing to invest in the design. Our guide provides a general overview for laying a sturdy foundation and stacking and securing blocks, but you can easily customize according to your preferences.
- A patio block pillar or column adds a timeless, distinctive flair to your outdoor area and you can use it in several ways, including:
- A stand for a container plant
- A base for a garden statue
- Support for a bird house or a small bird bath
With the right foundation and structural adjustments, you can adapt the pillar to support a fence or a patio block bench.
The steps below might vary based on factors such as the type of blocks you use, the maximum stacking height for your block and site conditions. Adapt these steps to fit your project.
In this project we use the terms pillar and column interchangeably, but these general instructions apply to a decorative landscape feature, not a load-bearing structure.
Safety Tips and Precautions
This project outlines building a decorative garden column with stackable blocks. It’s not intended for structural support. Follow the manufacturer’s instructions for your block, including specifications for the foundation and maximum height. In addition:
- Call 811 to check for underground utilities before beginning any excavation.
- Wear non-slip work gloves when handling blocks to protect your hands.
- Enlist a helper for unloading and moving the blocks to the work area if needed.
5 Steps to Build a Pillar from Patio Block
Step 1: Dig a Hole for the Foundation
For this pillar, we’re digging a 24-inch-by-24-inch hole about 6 inches deep. Depending on your project and block, your depth may vary. This foundation hole will hold paver base — crushed stone or gravel that creates a stable foundation for the blocks, improves drainage under the pedestal and allows you to adjust the first row to keep it level.
Step 2: Pour the Paver Base
Ensure the bottom of the hole is level and stable, then fill with paver base. If your block instructions specify paver base and paver sand, follow the instructions for your block. Tamp the material until it’s well compacted and screed it — draw a board across it to level the base at approximately ground level.
Step 3: Lay the Stone
Lay the first row of four blocks with the edge of each block aligned to the end of the next block to create a pinwheel pattern. The core of each row will be open. Tap each block down with a mallet or add paver base underneath as necessary to level it. Complete the first row and ensure the blocks are level. Brush off debris and apply a couple of beads of landscape adhesive to the top of each block.
Rotate the pattern 90 degrees and lay the next row so the joints are staggered from the first row for better stability. Ensure the blocks are level and flush with the first row. Continue laying the remaining rows, brushing off each row, applying adhesive and rotating the block pattern. Check to ensure each row is level and flush, tapping the blocks to engage them with the adhesive. Make any adjustments quickly, before the adhesive sets.
Wall block sizes and styles vary. Use the quantity in the material list as a guide. Some block includes an interlocking lip and creates a structure where each row is set back from the row below. Make sure the block you choose fits your design.
Step 4: Add the Pillar Cap
Finish the pillar with a cap, making sure to apply adhesive to the row below. To create the cap, position six blocks horizontally on the top of the pillar or use pre-cast retaining wall caps. Allow the adhesive to cure fully according to the manufacturer's instructions.
Step 5: Seal and Protect the Pillar
Although not required as part of the build, it’s a good idea to seal the blocks to help them hold up against the elements. Make sure the waterproofer you use is designed for vertical surfaces and concrete block. Follow the application and curing instructions.
Find Block and Paving Stones for Any Hardscape Project
Find stackable block for your garden pillar on Lowes.com. You can even have it delivered and save yourself some effort loading and unloading. Or visit your local Lowe’s to find the block color and style that works best for your landscape. A Lowe’s Red Vest associate can show you the available options and help you find the other materials you need, as well as tools to do the project right. Take a look at other retaining wall block and pavers so you can start planning your next hardscape project.