Bearded Irises are easy to grow, and well-suited for dry gardens. They grow well across most of the US, with the exception of the Gulf Coast and the Deep South, where excess moisture and humidity can cause the roots to rot.
For western gardeners, growing Bearded Iris is quite straightforward, as these tough, durable plants thrive in our dry climates. They require only occasional watering once established. When planted into fast-draining soils with full sun exposure, they are long-lived. They will multiply nicely to form showy blooming clumps.
Bearded Iris can be grown from potted plants in spring, or grown from bareroot rhizomes in late summer. When planting in late summer or fall, be sure to get your bareroot Iris in the ground at least 6 weeks before the first average frost date in your area, to give them enough time to establish before the ground freezes in winter.
To plant Bearded Iris rhizomes:
- First, prepare the soil. Mix a 3-to-4-inch thick layer of compost, a few handfuls of natural soft rock phosphate, and Yum Yum Mix into the top 8-10 inches of the soil.
- Plant so that the shoulders of the rhizomes are just above the surface of the soil. Don’t plant them too deep - Bearded Irises prefer shallow cultivation.