This iris and I. hexagona were considered to be a single species until recently.  I. savannarum is the most common iris species in Florida. Moist wil , Tolerance, Not salt tolerant of inundation by salty or brackish water. Low/no tolerance of salty wind or direct salt spray , Habitat, Marshes, wet prairie, dome swamps, riverine swamps in openings. , Did You Know?, Showy flowers Attracts bees esp. bumblebees.

According to Kew Gardens, it is from Central America and probably Cuba and Florida.   After going through the photos and labels for specimens in the S , Tolerance, Unknown Some tolerance to salty wind but not direct salt spray. , Considertions, Noted for being weedy. , Habitat, Disturbed. Old orange groves, pasture, roadsides. May occur naturally along the west FL coast including shell mounds and dunes . All records for in , Did You Know?, Showy flowers