As you can see I keep getting grass growing where I've landscaped. I placed weed screen down (not completely) and placed mulch down. Is there an easy trick on killing the grass here without harming the shrubs?
Had that same problem years ago, then started using a much higher quality cloth, and started using stone rather than multch.
A herbicide like RoundUp and be very carful to spray only the grass. You have to keep on it all season long, if you let the grass grow for even a few days, it puts a lot of energy back into the roots, so spray every time you see green.