The best time to seed a lawn in Pennsylvania is from August 15 through September 15 to give the grass roots time to take hold before winter. If you are unable to seed the lawn before October, wait until early spring and plant as soon as the soil begins to warm.
About this Author
Jennifer Loucks has been writing since 2000. She previously worked as a technical writer for a software development company, creating software documentation, help documents and training curriculum. She now writes hobby-based articles on topics including cooking, gardening, sewing and running. Loucks holds a Bachelor of Science in animal science and business from the University of Wisconsin-River Falls.