velvety violet blue siberian iris sibirica l. `tropic night` flowers large detailed vertical blooming flower heads macro closeup

bloom blooming blue bokeh botany bright buds closeup clumps detailed eurasia family flora flower flowers gentle genus green heads iridaceae iris irises large leaves macro native night north ornamental perennial petals plant purple schwertlilien shaped siberian sibirica slender species spring strandiris strappy sword throats tropic vegetation veined velvety vertical violet yellow