The planting containers/areas are made from 26 gauge galvanized steel that has been formed into a tube with a few sheet metal screws. It came in 4'x10' sheets, so the resulting tubes are a little more than 3 feet in diameter. Some of the sheets I had cut in half longwise by the supplier to be able to create two 2-foot-high areas from one sheet. These are still plenty large. The 4-foot-high containers are borderline ridiculous overkill, but they do grow large plants. I dig around a bit so that the that the tube will sit level and so the downhill side is sufficiently underground. Pressure treated timbers can be used to define small stable terraces and/or raise the dirt level on the downhill side of the tube. These are screwed together to desired height. 3/4" holes are drilled through and the assembly is held in place with 3/4" steel stakes pounded through the holes. The cages are 4-foot welded wire fencing held in place with rebar rods driven around the perimeter and are necessary in my area due to wildlife browsing pressure. There are a few small access holes cut in the fencing so you can reach in, to plant, weed or harvest.
Advantages of this method are modularity, durability, reasonable cost and that it doesn't require a large contiguous flat space to be created (or fenced.)
0:10 Tall Garden Unit Install
1:05 Short Garden Unit Creation and Install
2:55 Timber Retention Creation and Install
5:45 Finished Result
Негізгі бет Sheet Steel Method for Raised Bed Gardening on a Slope
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