Make a Potting Bench with Concrete Countertop and Metal Roof

Make your own Potting Bench with a Cast Concrete Countertop and a Galvanized Corrugated Metal Roof. This Garden Potting Bench is made from rough sawn Western Red Cedar and Douglas Fir. This is Part 1 of the series.

See the Youtube Video and download the Plans.


Background for the Garden Potting Bench

Build a Potting Bench with Cast Concrete Countertop and Roof for your Garden
Watch this video on YouTube.

(transcript of the Build Video Part 1)

Hi everybody, in this episode I’m building a potting bench.

In our garden here just past the gate there was a perfect spot for a potting bench. I’ve been wanting to build a gardening bench for Marilyn for a while now and make it a permanent addition to the garden. It is covered with a corrugated metal roof so, for stability, the legs are attached to concrete footings. In the cast concrete countertop I added a small sink that uses water from our irrigation system and drains down into a dry well dug below the potting bench. And we added a waste shoot to make cleanup easier.

Make a Potting Bench with a Cast Concrete Countertop and Galvanized Corrugated Metal Roof.
Potting Bench made of western red cedar and douglas fir

This potting bench turned out better than I had expected and was fun to build. Here’s how it goes together.

Sketchup Model Design Idea

Sketchup Model of a Potting Bench with a Cast Concrete Countertop and Galvanized Corrugated Metal Roof.
Sketchup Model of Complete Potting Bench

Footings

I poured 5 small concrete footings and attached galvanized post saddles with an anchor bolt.

Sketchup Model of a Potting Bench with a Cast Concrete Countertop and Galvanized Corrugated Metal Roof.
small concrete footings

The two front 4x4 legs are connected with a 2x6 top rail and a 2x4 bottom rail.

Sketchup Model of a Potting Bench with a Cast Concrete Countertop and Galvanized Corrugated Metal Roof.
rails connect the legs in a dado

These rails sit in dados cut in the legs. The back side of the bench has three legs. The front and back of the frame are connected with side rails.

Sketchup Model of a Potting Bench with a Cast Concrete Countertop and Galvanized Corrugated Metal Roof.

Frame of the Potting Bench

And middle supports are added for the bottom shelf and countertop.

Sketchup Model of a Potting Bench with a Cast Concrete Countertop and Galvanized Corrugated Metal Roof.

Beams are set on the legs and rafters lay across them. Strapping is laid over the rafters and corrugated metal panels finish the roof. 

Sketchup Model of a Potting Bench with a Cast Concrete Countertop and Galvanized Corrugated Metal Roof.

A cast concrete countertop is placed on the rails and a sink added. Additional framing is added across the back to support the top shelves. 1x6’s are laid across the bottom rails to finish the lower shelf. 

Concrete Countertop and Shelves

Sketchup Model of a Potting Bench with a Cast Concrete Countertop and Galvanized Corrugated Metal Roof.

A back wall is added to this lower shelf with 2x2’s and more corrugated metal. We’ll use a bucket to collect scraps that fall through the waste shoot hole on the right end of the counter.

Sketchup Model of a Potting Bench with a Cast Concrete Countertop and Galvanized Corrugated Metal Roof.

I’ll use Western Red Cedar for most of this build with the exception of the 2x6 top rails. I selected Douglas Fir for them as they would flex less under the load of the concrete countertop.


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