Fertilizer Registration and Penalties The North Carolina Department of Agriculture and Consumer Services offers advice on the fertilizer penalty system.
Island Lawn and Garden Concise discussion about organic and inorganic fertilizing along with a number of lawn fertilization topics.
Lawn Talk A range of lawn fertilizing articles beginning with "Choosing Fertilizers for Home Lawns".
MDS Harris Turf A commercial soil-testing laboratory that provides soil and water testing as well as plant and tissue analysis for golf courses and athletic fields, as well as agronomic growers and dealers.
