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Law of the Lawn: Updated Lawn Fertilizer Guidelines

Beginning in October 2013, Maryland updated its lawn fertilizer application guidelines. This new law helps protect the Chesapeake Bay from excess nutrients entering its waterways from a variety of sources, including many thousands of lawns. The main components of lawn fertilizer are nitrogen and phosphorous. When it rains, excess amounts of these nutrients are carried away by runoff water, empty into our Bay and there can endanger underwater life.

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