Credit: The Spruce / Letícia AlmeidaKey PointsZinnias attract pests because of their tender growth and blooms, making them vulnerable without proper care.Common zinnia pests include aphids, spider mites, earwigs, grasshoppers, and Japanese beetles.Physical removal, traps, and natural predators are effective methods for controlling infestations and protecting plants.As much as we love zinnias in a summer garden, so, too, do a number of common gar…