Organic products, maintenance can lead to a chemical-free lawn

04/12/2012 | Pittsburgh Post-Gazette

Maintenance and organic lawn-care products such as chelated iron can prevent the growth of weeds without the use of chemicals, Doug Oster writes. The grass should be kept about 3.5 inches tall to prevent weeds from getting sunlight, and the lawn should be aerated to ensure a continuous flow of water and nutrients to the roots, Oster notes.

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