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Common Lilac (Syringa vulgaris) - Signs of the Seasons: A New England Phenology Program - University of Maine Cooperative Extension
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Syringa vulgaris (Common Lilac, English Lilac, French Lilac) | North Carolina Extension Gardener Plant Toolbox
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Common Lilac (Syringa vulgaris) in Augusta Manchester Lewiston Waterville Maine ME at Longfellow's Greenhouses
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