Plan the perfect garden with our interactive tool →

How to Build a Raised Garden on a Slope

Slopes are a natural for raised gardens, since you have to create terraced beds anyway to level the ground. The benefits of raised gardens include more control over the soil and better drainage, and more oxygen, for the plants. Building raised garden beds on a slope can be accomplished without much digging, and the results can be quite compelling.

Measure your slope and draw it, to scale, on graph paper. Plot your raised garden beds, figuring each one to be 4 feet from front to back. Divide the length of the slope (from the lowest point to the highest) by four; this is now many raised beds you can build, each stretching from one side of the slope to the other.

Start at the very back of the slope and lay down a layer of bricks or blocks, first using your shovel to cut into the slope and create a small level trench, about 2 or 3 inches deep, for the bricks or blocks to sit in. Once you have the initial layer installed, add three or four additional layers, depending on how deep you want your raised bed to be.

  • Slopes are a natural for raised gardens, since you have to create terraced beds anyway to level the ground.

Now measure out 4 feet down the slope. Hammer in stakes at the 4-foot mark. Then take your 4-foot-long 2-by-4 inch board and lay it on the back brick extending out to a stake. Place your level on the board and raise the board until the little bubble is in the middle; with a pencil, mark the point where the board meets the stake. This is how high your next block or brick wall should be.

Again, create a level trench, 2 or 3 inches deep, to act as a foundation for the first layer of blocks or bricks, and then start layering until you reach the desired height.

Measure out another 4 feet down the slope and pound in your stakes. Bring out your 2-by-4 inch board and butt one end against the bottom of the wall you've just built. Once again, raise the other end until it is level and mark the spot on your stake. Build another wall, and repeat, if necessary, until you are all the way down your slope.

  • Now measure out 4 feet down the slope.
  • Again, create a level trench, 2 or 3 inches deep, to act as a foundation for the first layer of blocks or bricks, and then start layering until you reach the desired height.

When finished, you should have several rows of blocks or bricks stretching all the way across your slope. Now comes the fun part: filling in the dirt. Use good-quality topsoil, available at any home improvement store or garden center, and fill to a depth of 3 inches below the top of the front wall.

Your final step is to plant away. Raised gardens on slopes are great for vegetables, but they also can be beautiful additions to your landscaping. Try roses, or put leafy perennials in the back beds and annuals in the front beds.

Tip

Depending on how big your slope is, you might want to install irrigation as you are building your raised garden.

Instead of long raised garden beds stretching the entire width of the slope, you might want to create shorter beds and intersperse with stairways.

Related Articles

How to Terrace With Railroad Ties
How to Terrace With Railroad Ties
How to Build Brick Planters
How to Build Brick Planters
How to Measure for Block Edging for a Circular Garden Bed
How to Measure for Block Edging for a Circular Garden...
How to Build a Breeze-Block Wall
How to Build a Breeze-Block Wall
How to Install Pavers for a Grill
How to Install Pavers for a Grill
How to Build Natural Steps Up a Hill
How to Build Natural Steps Up a Hill
How to Install a Belgian Block Along a Driveway
How to Install a Belgian Block Along a Driveway
How to Make Steps in a Garden Slope
How to Make Steps in a Garden Slope
How to Build a Sitting Wall With Cinder Blocks
How to Build a Sitting Wall With Cinder Blocks
How to Build a Multi Level Patio
How to Build a Multi Level Patio
How to Build Steps on an Uneven Surface
How to Build Steps on an Uneven Surface
How to Lay Brick Garden Edging
How to Lay Brick Garden Edging
How to Level a Footer
How to Level a Footer
How to Lay Patio Pavers in Florida
How to Lay Patio Pavers in Florida
How to Build a Cement Block Garden Border
How to Build a Cement Block Garden Border
Garden Guides
×