grass in tree bed + weeding a straight line?
So, new to gardening.. I've got a row of arborvitae which the normal lawn grass and crab grass has invaded the bed.
The previous owner has a metal barrier (which is now overgrown by the grass) that surrounds the tree bed. I'm trying to re-establish this line (shown in red)
My other concern is the root system of the trees. I started weeding with a small tool and felt like I was just breaking tree roots. I've searched this weed forum and for the most part people say the weed killer will break down in the soil and not harm the tree, but my concern is how shallow these roots are. Is this dept of roots normal? Still all clear to use a spray to kill?
Question 2: Any tips of weeding in a straight line so I keep my lawn and kill only the grass in the bed
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