Bulletin #4047, Let’s Preserve Strawberries (PDF) Developed by Penn State Cooperative Extension with special project funds from Extension Service, U.S. Department of Agriculture. For information about UMaine Extension programs and resources, visit extension.umaine.edu. Find more of our publications and books at extension.umaine.edu/publications/. Some Recommended Varieties Allstar, Earliglow, Guardian, Sparkle, Tribute, and Tristar are usually excellent-quality