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A Frederick lawmaker expects his bill to help the Chesapeake Bay will be passed in the House of Delegates this week.Delegate Galen Clagett, a Frederick Democrat, is seeking greater restrictions on phosphorous in lawn fertilizers.
Phosphorous in the bay encourages algae growth that uses oxygen in the water that fish and other wildlife need. His bill would reduce the allowable level of phosphoric acid in fertilizers in future years from 5 percent to .5 percent.
The bill would not affect fertilizers used for agricultural purposes or by licensed landscape contractors.Clagett said that he exempted those fertilizers in an attempt to target his efforts toward residential properties.
Farmers have said that lawn fertilizers are a part of the problem of excess phosphorous in the Chesapeake Bay, he said.
?EUR??,,????'?????<?If we cut out all the lawn fertilizers, and the input into the bay doesn?EUR??,,????'?????<???EUR?t come down, then we know it is agriculture,?EUR??,,????'?????<? Clagett said. ?EUR??,,????'?????<?If it does come down, then we know to what extent it?EUR??,,????'?????<???EUR?s lawn versus agriculture.?EUR??,,????'?????<?
Clagett?EUR??,,????'?????<???EUR?s interest stems from his love of the bay, where he hunts, fishes and owns a second home. ?EUR??,,????'?????<?I?EUR??,,????'?????<???EUR?m very concerned about what?EUR??,,????'?????<???EUR?s happened to it,?EUR??,,????'?????<? he said.
The Maryland Farm Bureau raised concerns to the House Environmental Matters Committee that reducing phosphorous would make fertilizer less effective and contribute to soil erosion as homeowners would be unable to properly care for their lawns.
The Maryland Department of Agriculture also raised that concern, saying research from a number of states shows there are unintended consequences of mandating low or no phosphorous levels in lawn fertilizer.
The department?EUR??,,????'?????<???EUR?s state chemist said making the level too low would increase areas of bare ground. That could lead to water runoff and increased levels of phosphorous loads instead of intended decreases, according to a letter sent from the department to the committee.
Clagett dismissed those concerns, saying no evidence to that effect has been presented.
Florida, Minnesota and Wisconsin have limitations on phosphorous levels in fertilizers.
?EUR??,,????'?????<?Other states have done it, we?EUR??,,????'?????<???EUR?re not the pioneers,?EUR??,,????'?????<? he said.
His bill was supported by Environmental Matters with an 18-4 vote.
Source: Meg Tully, Fredrick News Post
Francisco Uviña, University of New Mexico
Hardscape Oasis in Litchfield Park
Ash Nochian, Ph.D. Landscape Architect
November 12th, 2025
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