How to Plant and Grow Iris Flowers
Yellow flag-iris (Iris pseudacorus) Fraser Valley Invasive Species Society
Blue Flag (Iris versicolor) - Plants for Ponds – Plants for Ponds Limited
Bearded Iris Growing Guide - Garden Express - Online Nursery
Bearded Iris Growing Guide
Iris pseudacorus - Wikipedia
Yellow Flag Iris (Iris Pseudacorus) native Marginal plants - Wetland Plants
Blue Flag Iris (Iris versicolor) 3-pack of pots — Blazing Star Gardens
Flag Iris, Iris pseudacorus, growing by river on the Isle of Eigg, Inner Hebrides, Scotland Stock Photo - Alamy
Yellow Flag Iris – New York Invasive Species Information