After cutting the entire plant back to ground level with hedge clippers, the plant will joyfully return to life, come springtime. www.rhgardens.com Growing Plants 101: The Complete Guide to Getting Started, Identify and Treat Tomatoes with Sclerotinia Stem Rot, How to Grow Anise Hyssop: A Flowering Perennial Perfect for Borders, Choosing the Perfect Flowering Perennials: 5 for Your Shade Garden, How to Rotate Fungicides to Prevent Resistance, How to Identify, Prevent, and Control Cedar Apple Rust. Carol. Iris care is minimal once the growing iris is established. Deer don't particularly care for this plant and will usually leave it alone in favor of tastier treats. I just do not understand its life cycle in our climate zone. The short answer is yes, it’s perfectly okay to completely cut back your Dietes. Hi, I am in zone 13. We have multiple bicolor irises in the front and back of our house, all in varying degrees of shade and sun. Dietes bicolor is one of my care free plants that provides beauty year round. https://www.gardenstylesanantonio.com/garden-tips-blog/plant/bicolor-iris Just so we’re on the same page about what plants we’re talking about, let’s get some confusing nomenclature business sorted out. The plant’s elegant, frilly flowers look particularly effective when planted in a mass in a floral spring border or pot. Irises are perennial, so they’ll go dormant in early winter. Bicolor African Iris is an herbaceous evergreen perennial with tall flower stalks held atop a low mound of foliage. Thanks so much, that is what I wanted to hear. Le plus souvent les Pétales sont d’une teinte plus claire. Corms are a different type of underground plant stem, one that’s more bulbous. I have several bicolor iris planted in a planter near our house that faces west and gets full afternoon/ evening sun. We live in the central Texas area. African iris (Dietes iridioides) provides an evergreen iris variety for warmer areas, including U.S. Department of Agriculture hardiness zones 8 through 11. Herein, we’re referring to species in the genus Dietes, and you can apply the instructions below to plants commonly known as African iris, bicolor iris, fortnight lily, butterfly iris, Japanese iris, wood iris, and probably untold other nicknames. Pruning photo by Gretchen Heber, © Ask the Experts, LLC. You can pinch or clip spent blooms, but don’t remove a healthy-looking flower stalk. A wholesale cut, as you would do with ornamental grasses, is definitely in order if you’ve neglected your Dietes for several years and there are more brown and yellow leaves than green. Help please! Pride of the Border Bicolor Iris Collection - 4 plants. Uncredited photos: Shutterstock. Their slowly increasing clumps of narrow, sword-like foliage usually remain green through the winter unless burnt by temperatures below 25°F. You might wonder if it’s also necessary to cut back grassy irises such as bicolor (Dietes bicolor) or African (D. vegeta) — plants that also sport the long, slender leaves common to grasses. You’d preferably do this cutting in fall, but don’t sweat it if you’re unmotivated to get out there until the weather has warmed up. Ces iris présentent des Pétales et des Sépales de couleurs différentes. Here is more about what we do. Iris borers can cause iris foliage to wilt,… Read more ». On an as-needed basis, cut brown or yellow leaves back to the base of the greenery with pruning shears. Butterfly iris is similar, but with wider leaves. It will continue to produce many more blooms. Caring for African Irises, which handle freezing worse than other irises, requires full sun in a place with good drainage and healthy, composted soil. Please help. Hi Christi, You have a mystery on your hands! Any thoughts on what is causing this? Annie - Dont do anything now, Iris are my big thing around here. Does the area get full sun, Merrill? URBANA, Ill. - There aren’t very many plants that come in a wider range of color than iris. Clumps can be divided with a shovel. Dies back in cold winters to a rhizome; between this and the roots Bicolor Iris spreads easily by itself. Les iris bicolores sont la preuve que toutes les associations de couleurs d'iris sont possibles. Twice a week if you’re receiving rain a couple of times per week. My bicolor iris are taking over what should be a small bed by my driveway. Hi Kandi, Sorry we are a little slow getting back to you on your question. Quote. Am I wrong? In this section we will see the key care of iris. How do you care for your bicolor or African irises? We’ve been in our house 3 years. Water your newly planted African Irises 2-4 times per week, depending on how much rainfall you’re experiencing in your area. Can anyone advise me on how to divide them or cut them back, just somehome make them smaller! 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