Most perennials are divided in spring or fall, but bearded iris prefer division in summer. On this week's episode of the Gardening Tips podcast, the Chicago Botanic Garden's Jacob Burns talks ...

Irises put on a show in Southern gardens in a rainbow of colors. Learn when different types of irises—Dwarf, Dutch, and ...

With vibrant colors such as royal purple and sunny yellow, bearded irises pop in gardens and add character to the landscape—how 'bout that ruffly look and the tiny "hairs" in th ...

For dwarf and Dutch irises, dig up and separate bulblets from the mother bulb every five years. Divide and transplant bearded iris rhizomes every three to four years. If the plants are reblooming ...

Irises can look wonderful in early summer, with masses of colourful blooms held on stout flower stalks. However, after several years the clumps will run out of steam and die off in the middle ...