On a Saturday the ball diamonds at Memorial Park fill early, and the smell of cut grass carries a couple of blocks in every direction. D & D Lawn Care Services keeps the residential version of that running all week — weekly mowing, string trimming, crisp edges at the walk, and spring and fall cleanups when a yard needs more than a cut. Lawns in this corner of Oakland County grow hard through May and June, then need coaxing across the dry stretch of August. Matching the schedule to what the grass is actually doing is most of the craft. The payoff is a yard the kids can walk out onto barefoot without anybody thinking about it.