Originally developed by Extension Ornamental Horticulture Specialist, Lois Stack, University of Maine Cooperative Extension with Judy Hazen Connery, Natural Resource Program Manager, Acadia National Park. Reviewed and updated by UMaine Extension Horticulture Professionals Jennifer Cappello-Ruggiero and Kate Garland, with special thanks to Gary Fish and Andrea Southworth for their contributions. For information about UMaine Extension