East Bay Lawn CareBristol, RI · mowing · cleanups · planting
Guide

Lawn fertilizer rules: Rhode Island versus Massachusetts

Massachusetts regulates lawn fertilizer under 330 CMR 31.00: phosphorus only when a soil test shows a need or when establishing, patching or renovating turf; no fertilizer on frozen, snow-covered, saturated or dormant turf; 20-foot broadcast setbacks from water. Rhode Island has no comparable statewide lawn law, but URI advises soil testing and feeding by mid-September.

Updated November 11, 2026

Gloved hands setting seedlings into soil

Fall River and Bristol are twenty minutes apart and under different lawn rules. If you have property on both sides, here's the difference.

What does Massachusetts' 330 CMR 31.00 require?

What applies in Rhode Island?

Rhode Island has not passed a comparable lawn-fertilizer law; as of 2013 ecoRI reported nothing in the pipeline. URI's Healthy Landscapes Program advises a soil test, only the fertilizer the grass needs, leaving clippings and fall feeding by mid-September. Narragansett Bay's nitrogen problem is reason enough.

Questions people ask

Can I use phosphorus fertilizer in Massachusetts?

Only with a soil test showing need, when seeding or renovating, or under the small exemptions.

Does Rhode Island ban phosphorus?

There's no comparable statewide lawn rule; follow URI's soil-test advice.

Who does a soil test?

UMass and UConn labs, per URI.

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