Answer: The answer to your question depends on what the weed is and how "perfect" a lawn you wish for. Weed control starts with having a healthy lawn that can outcompete weeds. A healthy lawn is based in good soil preparation, proper mowing, and the right selection of grass varieties. I would suggest you consult with your county extension as to identifying the weed and the best way to control it, as well as for their recommendations on lawn establishment and maintenance in your area. Another option would be to look at a book on lawn care such as "Lawn Care for Dummies" by Lance Walheim, ISBN 0-7645-5077-2 where you will find practical advise on lawn care including weed control.
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