What’s an alternative to putting harsh chemicals on a lawn?

I don't like putting chemicals or poisons on my grass and it looks a little sparse right now. What's an organic treatment I can use to get the grass looking fuller, more healthy? - Rhonda

There are some alternative treatments of lawn care available at garden centers including organic nitrogen, alfalfa-based fertilizers, manure-based fertilizers, milorganite (sewage sludge), and corn gluten.

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This story was originally published May 2, 2014 at 9:50 AM with the headline "What’s an alternative to putting harsh chemicals on a lawn? ."