Woodland Park lies at the foot of the first Watchung ridge, and the mountain's shadow crosses these yards early in the evening, long before the rest of the valley loses the sun. Dujets Tree Experts Inc. works the lawns underneath it — mowing on a weekly schedule, trimming along the traprock walls and outcrops that surface in half the yards around here, edging that keeps a drive looking cut rather than crumbled. Shade off the ridge means thinner turf in places, so the height comes up and the mower slows through it. Twice a year the beds and lawns get a full clearing, winter debris out at one end and leaf at the other. Ground this steep and stony rewards patience, and a finished yard shows the difference.