Convenience Fertilizers For Home Landscapes: Information on fertilizing shrubs and trees on home lanscapes.
Extremely Green Gardening Company: Online source for organic gardening products including fertilizers, biological pest control, soil test kits.
Fertilization of Lawns: Details the benefits of and how to fertilize lawns.
Fertilizer Application: Debates whether to fertilize with organic or inorganic products.
Fertilizer Registration and Penalties: The North Carolina Department of Agriculture and Consumer Services offers advice on the fertilizer penalty system.
Fertilizing Landscape Plants: Explains the necessities of fertilizing plants.
Fertilizing Woody Ornamentals: Explains the best way to fertilize these types of plants.
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.
Responsible Fertilizer Practices for Lawns: Outlines general fertilizer practices, nitrogen and phosphorus requirements, and application timing for lawns.
Soils and Soil Management: Offers a database and search function of a range of articles about fertilizers.
University of Maine Bulletin: Information on fertilizers to supplement nutrients in the soil.
Washington State Department of Agriculture: Information on products and their content of heavy metals, along with fertilizer laws and label requirements.