Berlin sits where the sand starts — pitch pine and scrub oak coming right up to the back fences, and the headwaters of the Great Egg Harbor threading the park in a slow tea-colored line. JMA Tree Service works that edge, taking out pines gone gray at the top and trimming the oaks that hang over a roof or a pool deck. Pruning in sandy ground is half about balance: keep a crown even and the tree holds, let it get top-heavy and one summer downburst lays it flat. When the weather does come off the pinelands and puts a limb through a shed, the cleanup runs from cutting the wood to raking the needles back into the beds. The yard ends up open to the tree line and smooth enough that the mower goes straight through.