Grass poking through landscape fabric
We have recently (1 month ago) had our backyard transformed into a rock garden. The entire yard was covered in landscape fabric and then covered in gravels, pea stone, and river rock. We already have grass blades poking through the river rock all along the border of our yard where the river rock was placed. There is already a lot more than I care to pick out.
Did my landscape contractor make a mistake, or is picking grass a normal part of having a rock garden? So far no grass is poking through the pea stone or gravel areas, just the river rock areas (river rocks roughly 5" diameter", roughly 2 stones deep).