Lots of gras came up between these rocks despite having a tarp under these rocks (the tarp is a minimum of 10 years old though I think). I put down grass killer and then went away for vacation. Now I have more greens!

Effectively, what would be the best way to remove this grass? I've been doing it all by hand but it's pretty much miserable, there is more rock bed than what is in this picture.

I think if a hoe works I would be pretty happy with it, but I'm not sure if there'd be a better way to tackle this?

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[–] scarabic 3 points 1 year ago

I’ve done two kinds of weed mesh and the weeds just grow right through it. As soon as it’s down, a layer of fine dust begins to settle onto the top of it, either from dust in the wind, footsteps nearby, or your mulch/bark degrading. Seeds germinate in that fine layer of soil, and their roots penetrate the mesh. I have seen roots travel a yard laterally and then penetrate the mesh. It’s maybe better than nothing at all but for the amount of work it takes to put in, you do not get the value you think you will.

And grass was the most pernicious plant I had to contend with.