Introduction: EASY RAISED GARDEN BED ON CASTERS FOR PATIO OR DECK
This is a tutorial for a 4'x4' raised garden bed on casters for use on a deck or patio. It can be done in a day for under 100 bucks.
This tutorial can be used to build two versions of 4’x4’ raised planter beds on casters, one is 18” high and the other is 30” high. But you can adjust your lumber lengths and do whatever size you need.
WHAT YOU WILL NEED:
For the 18” high planter bed:
Lumber:
21 2x6’s 4’ long*
2 2x4’s 41” long*
4 4x4’s 24”long*
Other materials:
2 1/2” galvanized screws
4 industrial strength casters**
Drill
Drill bit for drilling pilot holes
Phillips head bit tip
Tape measure
Pencil
For the 30” high planter bed:
Same as the 18” except you will need 29 of the 4’ 2x6’s and the 4x4’s need to be 36” long
*Note on the lumber: Most resources on the web will tell you to use Cedar or Redwood for outdoor projects, as they are less prone to rot. I asked my woodworking instructor about this and he is not convinced that they are much better than Douglas Fir, so that is what I used. Mine don’t have to last a lifetime, you can decide for yourself what to use according to your needs.
**Note on the casters: The wood and dirt are going to really add up weight-wise and you will need casters that have at least 250 lb load capability each. These can be very pricey, but I found a great deal and exceptional customer service at SES casters.
Step 1:
First, place 2 of the 4x4’s on the ground, 4 ft apart and place a 2x6 across them, like so:
Step 2:
Then drill your pilot holes and screw these pieces together, making sure the sides and top are flush.
Step 3:
Stand it up, this will be one side of your planter.
Step 4:
Do the same with the other 4x4’s and another 2x6. Face them toward each other 4’ apart. The 2x6’s are going to keep the dirt away from the deck and also be the supports for the bottom of the bed.
Step 5:
Next, take your 2 2x4’s and place them on the inside edge of the 2x6’s and 4x4’s. Now you can see the bed taking shape. This is the frame of your garden bed.
Step 6:
Drill your pilot holes and screw the 2x4’s to the 2x6’s.
Step 7:
There should be enough room for 7 2x6’s to fill in the bottom of the bed. Be sure to space them evenly and there will be the right amount of space between them for proper drainage. Drill pilot holes and screw all these boards to the 2x6 supports. BOOM! You’re halfway done!
Step 8:
Now you start to make the sides. Place one 2x6 on top of another, make sure it’s level. Drill pilot holes and screw the top 2x6 to the 4x4’s, then remove your spacer bottom board.
Step 9:
Do the same on the opposite side, and then the remaining 2 sides:
Step 10:
I suggest that you attach the casters at this stage, before you start attaching the rest of the 2x6’s and this thing gets really heavy. I also suggest getting someone to help you lift the frame up to do this and also to help bring it back down onto the casters. Mark where your pilot holes will be and screw on the casters.
Step 11:
Now that the wheels are on, all you have to do is attach the rest of the 2x6’s for the sides of your bed. Do this all the way around and you’re done! This is the 30” version and the 18” version.
I hope you enjoyed my Instructable! Please ask me any questions here or you can visit my blog at www.few-bits.com.
28 Comments
Tip 12 months ago
amazon have heavy duty caster in set of 4 for 35$. weight capacity 2200lbs and free shipping
https://www.amazon.com/Casters-Industrial-Furniture-Workbench-Hardware/dp/B09XN3P3P4/ref=sr_1_3?crid=121CVODZRN2JS&keywords=CASTERS+HEAVY+DUTY&qid=1664801749&qu=eyJxc2MiOiI1Ljg4IiwicXNhIjoiNS40NSIsInFzcCI6IjQuNjMifQ%3D%3D&sprefix=casters+heavy+duty%2Caps%2C185&sr=8-3
3 years ago
Though the plans are straight-forward and my 30" box came out perfect, this was an ABSOLUTE DISASTER!!! When the soil is added, the box weighs approximately one ton! Yes, that's right about 2,200 lbs.! Good luck moving that. And, when we tried moving it one of the suggested casters bent under the weight. Ultimately, I had to remove all of the dirt, lower it by two panels to the 18" model, purchase new 900 lbs. casters, put four pieces of 2x6 horizontally on each corner before adding the new casters. Even the smaller model is incredibly heavy and not easy to move. I'd love to know who is going to pay for my wasted lumber, wasted garden soil, and wasted time. BE WARNED!!!!
6 years ago
Wouldn't the water and dirt go through the spaces
6 years ago
could this be made smaller? i love this idea, but a 3'x3' box would be ideal. i am a bit math deficient so i'm struggling to figure out how to adjust this.
7 years ago
This was a cool project. I'm in Singapore and used Kapur wood which is ridiculously heavy. Had to cut it myself and varnished before assembly as we get torrential rain every day. Half finished and need to add hinge top. Thank you for the detailed instruction!!!!!!!
Reply 7 years ago
You're welcome! So happy to hear that it was successful for you!
7 years ago
Is it me or does the 30" version look like it has smaller space inside.
Reply 7 years ago
They are the same size, you can just see more inside the bed on the shorter version photo.
7 years ago
how much space between the wood to allow proper drainage; and is the space age only for the base?
Reply 7 years ago
I allowed about 1/8" between mine, and that was enough to allow proper drainage. I live in Southern California so there isn't that much rain.
7 years ago
I'm about to start this project, but was not sure what you meant by "then remove your spacer bottom board." on step 8
Reply 7 years ago
Don't screw in the bottom board, that is just used as a spacer. That way your bottom boards will be at the same level on all 4 sides without having to measure. Hope that helps!
Reply 7 years ago
Ah I get it, thanks! Any recommendations on what to line the inside or bottom with. Are there any issues with soil seeping through the tiny gaps in the bottom?
Reply 7 years ago
I didn't line mine...there was a bit of dirt that came through when I was filling them up but it was easily hosed away. Once the dirt settled and packed it was very minimal. I suppose you could line the bottom with weed blocking fabric like this http://www.homedepot.com/p/Vigoro-3-33-ft-x-3-ft-PLA-Natural-Weed-Block-1633HV/205552333.
Reply 7 years ago
I didn't line mine...there was a bit of dirt that came through when I was filling them up but it was easily hosed away. Once the dirt settled and packed it was very minimal. I suppose you could line the bottom with weed blocking fabric like this http://www.homedepot.com/p/Vigoro-3-33-ft-x-3-ft-PLA-Natural-Weed-Block-1633HV/205552333.
10 years ago on Introduction
Those castors are the size of a full grown human's hand! They are gonna hold up just fine. I have a suggestion about the attachment of the castors. I'm pretty sure that just the screw are enough, but I get paranoid, and I wonder if you though adding some sort of washer might give it added security that the screwheads wouldn't slip out over time. Or am I just being too paranoid?
I love the idea of a garden on wheels. You could add a pull string to it and haul it down the street to sell your "fresh from the garden" vegetables. LOL
Reply 10 years ago on Introduction
HA! That's a good suggestion about the washer. Hey, it couldn't hurt, right? Thanks, metqa.
10 years ago on Step 11
beautiful, but those seem like flimsy wheel sto carry that box filled with earth
Reply 10 years ago on Introduction
As I said in the notes, I ordered industrial casters from SES casters. I got the Medium Duty that have 300lb load cap each. I have moved the beds a lot (to get better sun) and they have held up just fine.
Reply 10 years ago on Introduction
Thanks, I must have missed that :-)