Beloved for their striking, elegant flowers in a sumptuous array of colors, iris is a shining star in the early spring to midsummer garden. The showy flowers sit atop tall, slender stalks, beautifully framed with fans of emerald green, spear-like leaves that add handsome vertical structure all season. Depending on the variety, they thrive in beds, borders, containers, naturalized areas, beside ponds and water features or in cottage gardens. Plus, the gnarly rhizomes make a beautiful and functional choice for planting on steep or difficult slopes for erosion control. Rhizomes spread and multiply readily, forming attractive clumps and providing plenty of new plants. They also attract important pollinators like bees, butterflies and hummingbirds.