Introduction: Super Easy Raised Garden Bed
IMPORTANT!!
I hear that pressure treated wood is toxic. I also hear that it's not. To be on the safe side, I recommend going the safe route and using regular wood.
This is an easy backyard raised planter bed which only takes the skill of cutting a plank of wood. I did not think this idea up myself but I did build it.
NOTE: The original design was for 2 x 4 boards, 5 x 3 in length, us using one block in each corner. But I wanted a higher bed so used a second set of 2 x 8s for a higher edge and I used three blocks on each corner. I used stacks of three blocks because with two blocks the 2nd tier of wood was wobbly.
Also, it's portable!
Supplies
- Twelve Planter Wall Blocks(Available at Home Depot or Lowe's, etc.)
- Two 2 x 8 pressure treated redwood planks (use whatever wood you wish)
- circular saw
- 1/2' rebar 4' long
- Level
- Hammer
Step 1: Measure Garden Bed Length, Width, and Placement
Measure the length, width, and placement of your desired size bed. Measuring in exact feet is recommended, makes cutting the planks to the right size easier.
Make sure you check for a location with proper sun coverage for what you want to plant!
Step 2: Place Planter Wall Blocks
Place one planter wall block at each corner of your planned bed. The planter wall blocks are available at places like Home Depot and Lowe’s in the garden sectioning for about three dollars each.
Step 3: Cut Planks for Bed
Cut boards to fit the bed size. For example, if you want your bed to be 5 x 3 feet, cut the board to the same lengths, five feet and three feet.
Fit the boards into the slots on the blocks as shown. You'll have to do a little jiggling around of boards and blocks to get them to be (or at least look) level and straight. I'm still doing that.
Because I wanted a higher bed, I used an extra set of boards with three blocks on each corner instead instead of one. I used three blocks on each corner because with only two, the top plank was was wobbly.
My bed is 5‘ x 3‘, but you can make your bed any size.
Don't fill with soil yet!
Step 4: Insert Rebar, But No Soil Yet
When your bed is level and square to your liking, take off the top block from each corner and drive rebar into the center hole of the blocks on each corner. This will prevent the blocks and wood from being pushed apart by the pressure of the soil that will go inside the bed.
Make sure the top end of the rebar is below the top side of the 3rd block. The photo shown on the right is with the top block removed.
Drive the rebar down far enough so that it is firmly stuck into the ground.
Replace the block on each corner.
The first photo is of the block being twisted and moved before I put in the rebar.
Step 5: Level, Square, Add Soil
Level and square the bed planks
Add soil
Happy gardening!
33 Comments
Question 6 months ago on Step 5
We exactly made our raised bed like this except we unfortunately failed to follow step 4. We placed all the blocks, placed wood and added rebar unlike what you explained in step 4.
Now we have added 5 yard of soil and the woods are being pushed away.
Any suggestion to fix this issue?
Answer 6 months ago
So you did put in rebar, or no? The rebar is the only thing keeping the blocks from moving, which keeps the wood from moving.
6 months ago on Step 5
We exactly made our raised bed like this except we unfortunately failed to follow step 4. We placed all the blocks, placed wood and added rebar unlike what you explained in step 4.
Now we have added 5 yard of soil and the woods are being pushed away.
Any suggestion to fix this issue?
Question 9 months ago on Introduction
How important is leveling the sides? I have a rather small backyard that I'd like to put a U-shaped bed in, where it'd basically be like attaching two 8 x 4 foot beds with a 3 foot strip connecting them.
3 years ago
In case any Canadians are around, the blocks cost 5.48 + 13HST =$6.20.... at Home Depot July 2020.
3 years ago
Hi, any ideia where I can get instructions in how to make this kind of Planter Wall Blocks? I live in Brazil, we never saw them here! Best, Paulo
Reply 3 years ago
While not exactly the same, you can make molds for these using https://manabouttools.com/make-concrete-garden-boxes/ as a guide. Instead of making the entire bed from concrete, just make the corner posts.
Reply 3 years ago
Hi, thank you very much!Nice idea and I will go to analyse it. Best, Paulo
Reply 3 years ago
Hi Paulo from Brazil!
I bought them at Home Depot, but I've seen some online that are made of metal, but they are more expensive than the ones I have.
Reply 3 years ago
OK, thank you.
3 years ago
Brilliant!
I could do with one of those for the wife!
3 years ago
amazing. my daughter just made this a few days ago and she does not read Instructibles.
looks like this design has been going around for a while now. she put wire mesh under it to deter gophers etc and fabric mesh over it to stop her cats from using it as a little box.
3 years ago
To those railing against pressure treated wood. Toxic chemicals are no longer used for residential pressure treated wood. They stopped using the arsenic treatment in 2003. What they widely use now is very low toxicity copper-based treatments (why they have the green tint). That said, it's still better to use un-treated wood for food gardens, esp organic.
https://www.epa.gov/ingredients-used-pesticide-products/overview-wood-preservative-chemicals
Reply 3 years ago
As I noted above, I use composit decking which is more expensive but lasts forever and doesn't have the problems with even copper-based treatments. Also the blasted borer bees aren't attracted to it.
3 years ago on Step 5
Glad to see everyone realizes that even the so-called "copper"-treated wood is still toxic.
I've used composit decking instead of real wood as that lasts forever and the real wood I used (cedar) didn't last even 4 years here in NE TN. I would suggest lining the beds, especially if you've raised them three or four high, with landscape fabric so the soil doesn't wash out between the boards.
3 years ago
I already have these blocks and boards stored waiting to be put in place. I have to dig up some old PVC irrigation and reconfigure for the new beds first but almost there.
Just a note. Locally the boards are cheaper at Home Depot but the blocks are cheaper at Lowe's. They are called Old Castle.
They recommend using 2x6 boards as that is the same height as the blocks. Also putting rebar in the holes in the center of the blocks for stability. I'll be using three blocks and then putting a board flat across the top to finish and provide a seat when I garden. I'll be building two 4x8 beds and two 4x10 beds in my front yard as a Victory Garden. I want to run PVC under them to come up in the beds and then transition to drip irrigation so I can run them under one timer. I'll have a mix of vegetables and native flowers for the bees and butterflies. With four beds there will be a pathway between the four and I'll have a birdbath at the intersection. I'm hoping to be done with the fourth by the end of the summer but the first bed should be in by the end of the month. With the PVC in the next three should go faster.
While I am taking out the grass underneath I've read it isn't entirely necessary. You can place cardboard down, then some weedcloth on top and a layer of compost. Then fill with dirt. I'm skipping the cardboard.
I love these blocks. The moment I saw them I knew they were what I was looking for for my raised beds. Ease and sturdiness of construction, plus low cost, was what I wanted but the fact I can take them apart, move them, reconfigure just makes them all the more perfect for my needs. Can't beat the convenience and price.
Question 3 years ago
Would you recommend this as a maximum height or could you go up to 6 blocks high. I'd like to use the back wall as a retaining wall feature.
3 years ago
USA-LOWES $2.98 Oldcastle Planter Wall Tan Retaining Wall Block Item #1514085 Model #16202336
USA-HOME DEPOT $3.18 Oldcastle Tan Brown Planter Wall Block Buy 60 or more $2.86
Note: On one of the (several) U-tube videos, I noted the HD prices was shown as $3.67 US. So, shop around! Also, looks like Permacon recommends Rebar and adhesive!
3 years ago
It's probably not good to use pressure treated wood if you're going to be growing 'organic' vegetables. The chemicals used for pressure treating can leech into the soil and into your plants. Research has shown it's in very small amounts, but if you're sensitive it can still make a difference. And if you're shooting for real 'organic' you'll need to use something to isolate the boards from the soil like heavy plastic or rubber pond liner.
That said - what a great idea!
I haven't seen those cement planter wall blocks before.
Thanks!
Reply 3 years ago
Hi, I went ahead and edited the Instructable to include a heads up to probably use regular wood.