Bearded irises (Iris germanica) are vigorous perennials that bloom in spring in a rainbow of colors (in fact, the name iris refers to the Greek goddess of the rainbow). Bearded irises increase in size ...

Irises are beautiful flowers with incredible diversity! With more than 70,000 registered varieties, these striking perennials can be planted across almost the entire U.S., except some extremely hot ...

Choosing the right rhizomes is essential. Irises are hardy, low-maintenance perennials admired for their stunning flowers and diverse color palettes, which range from vibrant purples and blues to soft ...

DENVER — Everybody loves iris, but as your garden becomes shadier over time, your iris may need sunnier locations. Even if you have plenty of sun, clumps need to be divided when they become ...

Question: I have mature bearded, Siberian and Japanese irises in the garden at the older house we bought this year. These have all finished blooming. How do I best care for them now through the summer ...

Garden columnist Dan Gill answers readers' questions each week. To send a question, email Gill at [email protected]. When is the best time to cut the leaves of Louisiana iris plants? They bloomed ...

Bearded iris plants need to be thinned or divided every 3-5 years. A single rhizome sprouts new rhizome offshoots many times over the years, developing into a heavy criss-cross clump, often choked ...

Q:I live on a "wild" mountainside and have groupings of Douglas iris growing in various spots. Most of them get no supplemental water and die back each summer. One rather large area of irises is in my ...

Owing to climactic conditions here in the Inland Northwest and my admittedly lazy ways, perennials in my garden have to meet a long list of criteria. They have to be heat and cold tolerant, drought ...