Using lockdown to do some DIY and install some artificial grass. Have made a lot of mistakes along the way (getting the rest of the garden sorted) so would like to try and avoid any major f-ups going forwards. Are timber gravel boards (staked in) suitable for use as edging? Three sides of the edges back onto concrete (patio + walls either side) so I am not too concerned about the strength of handling the subbase etc on those sides. But the side that is edged into soil (will eventually be a narrow path covered in pebbles down the side o lf the garden)? Are gravel boards ok for use there? The artificial grass will be screwed into the top of the boards so you won't see them.