Something Was Digging Into the Bed at Night
I went out one morning in June with my coffee to check on the beds before the heat set in, and the soil in the corner of the first bed was thrown everywhere. Not just disturbed, actually flung, with a shallow hole dug down maybe four or five inches and loose dirt scattered across the path in front of it. Nothing was pulled out or eaten that I could tell, it looked more like something had been digging for the sake of digging, or looking for something underneath. I stood there with my coffee going lukewarm, just looking at the mess, trying to figure out what could have made that much of it overnight.
Making sure it was not something else
My first thought was that maybe it was just wind, or that I had disturbed the soil myself the day before and forgotten. I raked it smooth that evening and checked again the next morning. Same thing, a fresh hole in almost the same spot, deeper this time. Whatever it was, it was coming back to the same corner of the same bed, night after night, and it was not going to stop on its own just because I kept smoothing the dirt back down. Three mornings in a row of the same pattern was enough to convince me this was not a one time thing.
Trying to work out what it actually was
I never saw whatever was doing the digging, only ever the aftermath each morning, which made the whole thing more unsettling than it probably needed to be. I looked at the size and shape of the hole and guessed at a few possibilities without any real confidence in any of them. A neighbour who has lived on the street longer than we have suggested it was probably something small looking for grubs or insects in the loosened soil rather than anything after the plants themselves, which made a certain amount of sense given that nothing green ever looked disturbed, just the bare dirt near the edge of the bed. I never confirmed exactly what it was, and honestly, once the barrier was working, I stopped caring much about identifying it. The fix did not need to know what it was to work.
The loose cover that did not work
My first attempt at a fix was laying a sheet of light plastic mesh loosely over the top of that corner, weighted down at the edges with a couple of bricks. It seemed like a reasonable first step, cheap and quick, and I figured whatever was digging would just move on to easier ground. Instead I found the mesh pushed up and shoved sideways within two nights, with fresh digging happening right at the edge where the mesh met open soil. A loose cover that is not actually anchored into anything just gives whatever is digging a new edge to work around, and I had basically handed it a clean line to follow instead of a barrier to stop at.
Building an actual barrier
What finally worked was treating it less like a cover and more like a fence built into the bed itself. I bought a roll of galvanized hardware cloth, the kind with small enough openings that nothing could get through it easily, and cut it to fit the full top of that bed rather than just the corner that kept getting hit. I bent the edges down at a right angle all the way around so the mesh formed a shallow tray shape, then set it directly on the soil surface and pinned it down at intervals with landscape staples pushed all the way into the ground. It took most of a Saturday morning, mostly because I kept stopping to make sure the corners were tight enough that nothing could work a gap open.
Burying the edge instead of just covering the top
The part I had missed with the first attempt was that a top cover alone does not stop something willing to dig in from the side. So along the base of that bed, right where the wood meets the ground, I dug a narrow trench a few inches deep and buried the bottom edge of a second strip of the same hardware cloth into it, running the full length of the wall, then backfilled the trench over it. That gave the barrier a below ground edge to work against instead of leaving an open seam right at soil level where something could just dig straight down and under. It was slower going than laying the top mesh, since the trench had to stay a consistent depth the whole way around, but it was the part that actually mattered.
Checking it is actually holding
It has been a few months now and that corner has not been touched again, though I still walk out most mornings with my coffee and take a look before I do anything else, mostly out of habit at this point. I did the same buried edge treatment along the other three beds not long after, even though none of them had shown any digging yet, since it seemed easier to do it once while I already had the roll of mesh out than to wait and repair a hole later. Theo thought I was being a little much about it, but I would rather spend an afternoon burying wire mesh than lose a bed worth of soil and whatever is growing in it to something that just keeps coming back. It is the kind of unglamorous work that does not show at all once it is done, which I have decided is a fine trade.
What I would do differently next time
If I were setting up a brand new bed today, I would put the buried mesh barrier in before I ever added a single scoop of soil, rather than digging a trench around an already established bed with plants in the ground nearby. Retrofitting it around the first bed meant working carefully close to root systems and trying not to disturb more than I needed to, which slowed the whole project down considerably. On the newest bed, the barrier went in on day one, laid flat under the base before the frame even went on, and it took a fraction of the time compared to digging it in after the fact.
