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Iconic spring blooms are not associated with allergy symptoms. Instead, allergy symptoms often arise from flowering blooms of birch, oak, and maple trees, and especially from plants in the Ambrosia genus (ragweed). All images used under Creative Commons licenses. Images courtesy Wikimedia Commons, except for the following images from Flickr users: cherry blossoms: ＠近所の公園, daffodil: Thomas Redican, dogwood: Claire Thompson.