This week a new legislation was signed into law limiting lawn fertilizer use in an effort to protect the Chesapeake Bay from nutrient pollution. Lawn fertilizer may not be applied before March 1st or after November 15th. While one would think it common sense, restrictions were also placed on how close to water (10 – 15 feet) fertilizer could be applied.
Restrictions were not placed on “natural organic” fertilizer that contained phosphorous; though come 2013 such material containing phosphorous could not be applied uness warranted by soil test results.
Source: Baltimore Sun