I'm a big fan of Weed-B-Gone since it kills the weeds and leaves the grass alone. The only other options would be to pull them by hand or kill everything and start over.

I am a big fan of the "clipped meadow." Just mow from time to time, sprinkle on some clover seed in the fall, look for wildflowers, violets, watch the bees at the small flowers of these "weird weeds."

When you leave soil uncovered and exposed, this is what happens. Nature abhors a vacuum.

It looks like you have wild blue violets (the rounded or heart-shape leaves on a single stalk). I use Weed B Gone which kills all weeds but leaves the grass alone. You can use it in a hose sprayer if you want to cover a wide area. Follow directions on the bottle for a hose end sprayer.

Thanks all, I did the Weed-B-Gone and we'll see what happens. The total area is about 115' by 10'. I should have sprayed early spring but was clueless.

violets? maybe. but you could have an infestation of garlic mustard, worst weed in the east. first year, heart-shaped leaves, low-growing; second year, 20-24 inch plant with white flowers; third year, a weed seed bank that persists for seven years. i'd get out the roundup.