Blue Flag Iris (Iris versicolor)

Blue Flag Iris (Iris versicolor)

Blue Flag Iris is a true wetland plant that thrives in wet soil and even under water! Grows well in rain gardens, shoreline restorations under up to 6 inches of water, and even potted and placed in ponds. Can grow in soil with medium moisture, too. Spreads slowly to form tight clumps.


Sun:    Full Sun, Part Shade
Moisture:    Wet, Medium
Height:    3 feet
Blooms:    May, June, July
Color:    Blue
Spacing:    18-24″
Zones:    3-6
Benefits:    Hummingbirds

Design Tips

Blue Flag Iris can grow up to 4 feet tall in wet locations. In rain gardens, plant scattered throughout for nice tufts of sword-like stems.

Companion Plants

Marsh Milkweed
Fox Sedge
Marsh Marigold
Bottlebrush Sedge