Blue Flag iris - Iris virginica is also known commonly as Virginia iris. This is a beautiful flowering perennial native along coastal plains in Florida. The flowers are flightly fragrant and vary in color from dark-violet to pinkish-white. The sepals have some yellow to yellow-orange at the crest. These plants boom typically from April to May and go dormant in the winter. Blue Flag Iris does best in full to part shade, in wet to moist sandy soil. In the right conditions this plant can get up to 4 ft tall but on average it is between 1-3 ft.