Sunday mornings on the Mountain Park side of Lilburn are so quiet you can hear a screen door two streets over. Prestige Landscaping LLC works those neighborhoods through the week, shaping hedges, refreshing beds, keeping the lawns mowed and their borders held to a line. Landscaping here is mostly patience — a shrub taken back a little at a time, a bed reworked so it still looks right in three seasons. When the plantings are in order, the grass looks better than it has any right to. A yard in that kind of balance gives a house a settled, unhurried look.