There are many reasons why it’s a good idea to make a garden wall. One reason is that it can keep your plants and vegetables safe from animals who want to eat them or ruin them in some other way. Another reason is that you can use the wall as a place to grow plants that need lots of sun. Finally, a garden wall is pretty and gives your yard an amazing look!
Gather the tools you need to build a wall from concrete blocks.
Before you can start building, you’re going to need the following tools:
- A trowel. This is a small shovel-like tool that will be used for measuring and pouring concrete into wall forms.
- A bucket. The bucket will be used as a mixing vessel for the concrete. You can get creative with this part of your tool kit by using an old tin can or anything else that seems appropriate!
- A level and spirit level . These two tools are essential when it comes to laying out your blocks correctly on the ground and ensuring that everything is leveled as well as it can be. The level does just that: it tells you if something is level (or not). The spirit level will help you determine whether or not something is plumb (that is to say, straight up and down), which is important when considering how many blocks make up each course in your wall.
Buy enough blocks to build your wall and a few extra, just in case.
To ensure that you have enough blocks to build your wall, buy enough blocks to build your wall and a few extra, just in case. You can do this at a garden center or hardware store, where they will sell blocks in bulk (bulk packages of multiple sizes), kits with pre-cut sizes and shapes, packages of specific types (e.g., plain concrete, colored concrete), boxes or bags of individual pieces (e.g., flagstone).
Lay out the garden wall, using strings and stakes.
Lay out the garden wall, using strings and stakes. Use a string line to lay out the garden wall and make sure it’s level. Insert stakes in each corner of where you want your garden wall to be, about 4 inches into the ground. Then place a string level on top of the posts to make sure they’re at level height with one another, adjusting them from time to time as necessary until they are all at equal heights; this will ensure that your garden is well-formed and won’t fall over easily when you put plants in it later on!
Dig a trench for your wall.
- *Dig a trench for your wall.**
- Dig the trench to the depth of your blocks, using a spade or shovel. Make sure it’s wide enough to accommodate them and level, straight and deep enough to hold them in place when they’re stacked up; you don’t want your wall falling down!
- Pack soil tightly around each block as you set it into place, making sure that its edges are flush with those of adjacent blocks and no gaps remain between them (if necessary, use some extra soil or sand). Fill any gaps with mortar or mortar mix according to manufacturer’s instructions before continuing on with laying up more courses of blocks until finished
Put gravel in the trench and level it.
- Put gravel in the trench and level it.
Gravel is the best material for a drainage layer, especially if you plan to grow plants that need a lot of water. It drains water quickly and allows air to reach your plants’ roots. If your garden doesn’t get very much rainfall, or if it’s in an area where rain is hard to come by, then gravel will be less useful as a drainage layer because there’s not much water coming through it anyway. However, if you live somewhere with plenty of rain (or snow), then this may not be an issue at all—and even if you don’t get much precipitation at first glance, consider how often your garden gets flooded after heavy storms or monsoons!
Fill the cores of your first two courses with gravel or crushed stone.
Fill the cores of your first two courses with gravel or crushed stone. Don’t use sand, cement, or water. They won’t work as well and will make it harder to plant later on.
Lay your first two courses of blocks as an even base for the rest of your wall.
Once you have all the required blocks in place, start laying them horizontally with a trowel. Place one block on each side of the wall, leaving about a centimeter gap between them for mortar. The next step is to set vertical mortar joints between each horizontal layer. Make sure to keep these blocks level—this will ensure that your walls are straight and even.
Next, fill in any gaps from where pieces aren’t meeting up perfectly by adding more mortar and pressing everything into place firmly until there are no gaps or uneven spots left anywhere on your wall.
Finally, use your trowel again to spread small amounts of hot glue over top of each joint for added strength and durability (and extra precaution against water).
Avoid having horizontal mortar joints that are more than 2 inches thick.
When you lay brick, mortar joints should be about 1/4″ to 1/2″ thick. They should be level with the face of the block, and approximately 1/4″ to 1/2″ wide. This allows for some expansion and contraction as the masonry settles over time. If your mortar joints are too large, it can cause cracking in your wall during freezing winter months when moisture crystals expand inside of them.
Fill the block cores with gravel or crushed stone.
Fill the block cores with gravel or crushed stone. This step isn’t absolutely necessary, but if you want to make sure that your wall will be stable and last a long time, fill each block core with gravel or crushed rock. The weight of the stone will hold the blocks together better than if they were just stacked on top of each other without any support in between them.
Let the mortar set before placing additional blocks on top of the masonry line.
Let the mortar set before placing additional blocks on top of the masonry line. This can take up to 24 hours, depending on your climate and conditions. If you’re using a heat lamp or hair dryer in an attempt to speed up this process, be sure not to get too close; doing so will damage your blocks and masonry line.
Fill in any gaps with filler stones and mortar until it’s level with or just below the face of the cinderblocks.
Fill in any gaps with filler stones and mortar until it’s level with or just below the face of the cinderblocks. For a more attractive option, you can use crushed stone for this purpose. If you don’t have crushed stone, default to using mortar instead (1 part cement to 2 parts sand).
You can build a small wall from concrete blocks yourself.
You can build a small wall from concrete blocks yourself. You will need to buy the following:
- Concrete blocks
- Mortar (to hold the blocks together)
- Gravel (to fill in between the cracks between the blocks)
- Shovel, trowel and level
We hope you have found this guide useful, and we wish you a great gardening experience.