Why a State-Level Calendar Matters
National lawn-care advice fails almost everyone. “Fertilize in spring” is useless when spring starts in February in Phoenix, April in Chicago, and late May in Bismarck. “Aerate once a year” is useless when the right month differs by four months between warm-season and cool-season lawns. The LawnBySeason state calendars sit exactly at the level of specificity most homeowners actually need: specific enough to be actionable, general enough to cover the whole state at a glance. If you need city-level timing, each state page links directly to the city-level guides.
How to Use the Calendars
Start by finding the current month on the quick-reference table for your state. That row tells you the one thing to do this month — usually the only thing. Ignoring the other eleven rows is fine; doing the wrong task at the wrong time is worse than doing nothing. The detailed month-by-month section below the table explains why the task matters, how to execute it, and what can go wrong. The grass-type breakdown at the bottom of each state page tells you exactly when to mow, fertilize, aerate, and overseed for the specific species you actually have.
Related Resources
Once you know the right month for a task, use the city-level tools to get specifics for your neighborhood. Lawn mowing calendar tells you mowing frequency and height by city. Watering schedule tells you how much to water each week. Water restrictions lists current drought restrictions in affected states. And the grass guides cover planting, maintenance, and disease for every common US lawn species.