Greenlawn was farm fields and pickle grounds long before it was neighborhoods, and that flat, open land still shows in the size of the lawns there. Pacific Lawn Sprinklers Greenlawn keeps them watered on purpose — zones laid out to the yard's real shape, heads adjusted so the spray clears the beds and misses the sidewalk. April brings startups and pressure checks; the first cold snap of autumn brings shutdowns and blowouts. In between, the system runs early and quietly, before anyone is out on the grass. A lawn that gets the right water at the right hour hardly ever needs rescuing come August.