Sweep it and roll it during the winter.

Pick off stones, sticks, or anything that "has no business" on it, as you would pick "bits" off a carpet.
If grass grows rank and coarse, a dressing of sand will improve it; if it is poor and easily burned up, give it a sprinkling of soot, or guano, or wood ashes (or all three mixed) before rain.

"Slops" are as welcome to parched grass as to half-starved flowers.

If the weather is hot and the soil light, it is well occasionally to leave the short clippings of one mowing upon the lawn to protect the roots.
I do not know if it becomes unmanageable, but, in moderation, I think camomile a very charming intruder on a lawn, and the aromatic scent which it yields to one's tread to be very grateful in the open air.

It is pleasant, too, to have a knoll or a bank somewhere, where thyme can grow among the grass.