Answer: I'm not sure why there's a concern about the grass reseeding. Allowing the seeds to germinate will only result in a thicker lawn. Since you didn't indicate what part of the country you're gardening in, or what type of grass you have, I can't give you specifics as to how long or short to cut your lawn. A general rule of thumb is to cut only a third of the blade's length and to mow often enough to keep it from being scalped when you do mow. Bluegrass and fescues should be maintained at about 2 and a half inches. Hope this information is helpful.
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