Giant Blue Flag - M 4-6’ tall; Medium blue. Native to swamps and marshes in Louisiana, but performs well in perennial gardens also. .Zones 6b-10a only

One of the native species, Giganticaerulia were some of the first iris found growing along the bayous and swamps of Louisiana. They have been growing in popularity as gardeners learn they are endangered in the wild, and a move is on to preserve these natives for future generations. These iris will grow in most zones, but bloom best in zones 6b-10a.

photo by Diane Louw