This spring I built a self-irrigating gutter (SIG) using two gutters based on a video by Larry Hall. You can see my original post about this project here. Essentially, it is a gutter filled with potting mix, sitting on top of another gutter filled with water. Every eight inches there is a 3 inch perforated pot filled with potting mix that hangs down into the water filled gutter. For mulch I used re-purposed billboard vinyl scavenged from a dumpster by my neighbor Ray.
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