The tall, beautiful iris comes in many magical colors and is rugged, reliable, and easy to grow. Irises will bloom best in full sun. They can tolerate as little as half a day of sun, but it’s not ideal. Without enough light, they won’t bloom. Do not overwater irises; too much moisture in the soil can cause the rhizomes (roots) to rot. Water consistently and deeply, especially during summer drought. Deadhead (remove spent blooms) consistently; Bearded Irises will flower sequentially on buds spaced along the stems.