Categories blue & purple flowers | Iris sibirica Iris sibirica Common name(s): Siberian Iris, Siberian Flag Synonyme(s): N/A Family: Iridaceae Origin: Europe to Siberia, Turkey, Caucasus More infos: USDA zone 4. Siberian Iris with Lupines. Related plants:Babiana nana Crocus ancyrensis Crocus angustifolius Crocus chrysanthus cv. Crocus ochroleucus Crocus speciosus Crocus tommasinianus Crocus tommasinianus “Roseus” Crocus vernus “Pickwick” Gladiolus communis Gladiolus murielae Gladiolus papilio Hesperantha coccinea Iris bucharica Iris pseudacorus Iris × barbata “Burmese Dawn” Iris × barbata cv. Neomarica longifolia Tigridia pavonia