Softneck garlic seeds should be planted in Pennsylvania in the fall. According to Garlic Central, most gardeners plant their garlic after the first major frost. Planting in the spring up north can lead to smaller bulbs and a poor harvest.
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Aileen Clarkson has been an award-winning editor and reporter for more than 20 years, earning three awards from the Society of Professional Journalists. She has worked for several newspapers, including "The Washington Post" and "The Charlotte Observer." Clarkson earned a Bachelor of Arts in journalism from the University of Florida.