The state of Iowa has adopted numerous symbols through the state legislature. These symbols are listed in the Iowa Official Register.
State symbols Type Symbol Notes Adopted Image Bird American Goldfinch Spinus tristis (synonym: Carduelis tristis) 1933 Flag Flag of Iowa Specified in Iowa Code - Title I Chapter IB 1921 Flower Wild Rose No one species is established by the legislature, but the wild prairie rose (Rosa arkansana — synonym: Rosa pratincola) is most often used. 1897 Rock Geode 1967 Seal Seal of Iowa Includes the state motto: "Our liberties we prize, and our rights we will maintain.", specified in Iowa Code - Title I Chapter IA 1847 Song "The Song of Iowa" by S. H. M. Byers Tree Oak No species or variety designated 1961
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