Build a Circular Raised Garden Bed
Dig a Moat. I cut an edge and dug a moat using a garden spade. The earth gives the bottoms of the poles some backing and support and makes them easier to set.
Measure and Cut. To get the Stonehenge (Planthenge) effect, I cut the poles between 22 and 28 inches and angled my chainsaw slightly differently in each cut. The sawbuck makes it easy to slash out quick marks and get four pieces out of an 8-ft. pole.
The chainsaw was fun to use on this project. There I no better tool for making quick cuts in big pieces of wood.
Setting Poles. Get two poles reasonable plumb, set them in the moat and bomb a structural screw in there to lock them together.
Eyeball it. We checked for plumb every few poles with a 2-foot level. However, they’re rough poles, not planed dimensional lumber, so we also stepped back every so often and took a glance to see if it looked right. This is one those times where the tool is a guide but in the end you trust your eye. It knows what looks right.
Outer Circle, Last Log. Since the poles I used varied in size from 4-5 inches or so, once I got to within about 2 feet of closing the circle, I did a mix and match of poles I already cut to see which combination of heights and widths fit best.
Rip Cuts and Wedges. Necessity being the mother of invention I realized, as I got tangled up in landscape fabric, that wedges would be a great way to hold the fabric in place against the inside of the outer circle. Luckily, the chainsaw—mine’s a Stihl—rips as well as it cross-cuts. After securing the bottom of the pole in my sawbuck, I ripped some semi-circles off the edges of the poles.