This location should receive a good deal of sunlight and should be well draining. Recommendations for when to divide irises depend on the species. Sign up to get all the latest gardening tips! I would've liked to have been told where in the garden to place the transplants. When well cared for, iris plants will need to be divided on a regular basis. Did you notice your irises producing fewer flowers? Hoping if I divide them we'll get more next year. Is your clump looking raggedy and overgrown? Dig a hole where the rhizome will settle into the ground just below the ground level. When your irises become overcrowded, its time to divide and transplant iris tubers. Using a pitchfork, carefully dig around the bearded iris plant, starting about a foot away from the outer-most edge. The new beds should be prepared at … You must be a magazine subscriber to access this feature. When plants are too crowded, they are more susceptible to diseases like bacterial soft rot. If you have noticed that your iris are blooming less than they usually do, you may need to transplant the iris in your garden. Don’t worry, I still get blooms. Time to Divide Iris by Carol King. Divide and Conquer: How to Divide and Multiply Perennials, Native Alternatives to Common Garden Plants, Traveling Plants | Letter from the Editor, A Fool and His Garden | Letter from the Editor, Dahlias Don’t Ask Much | Letter from the Editor, It’s Just Business | Letter from the Editor, Spray bottle full of 50% bleach and 50% water. The best time to plant and transplant rhizomatous iris is late July through September. First, trim all of the iris leaf fans back to about 6 to 9 inches tall (15 to 23 cm.). The next sign that you should consider transplanting your iris is if the rhizomes start heaving out of the ground. Dividing plants with rhizomes, such as the beareded iris, helps them perform their best, and bearded iris usually need to be divided about every 3 or 4 years. Given that division can differ slightly between irises, it is important to know which irises you are seeking to divide. You can divide bearded iris anytime after flowering and through the month of August. … They may even stop putting up foliage and the plants may only grow foliage on the outside edges of the clump. Rest assured I have used this method for years with 100% success. Do not remove the roots from the rhizomes. The furthest thing from your mind may be spring flowers. The iris family (Iris spp.) Yes, I do know that the proper time to divide Iris is six to eight weeks after they have bloomed but so many times I don’t get to all of them and come Spring time I have some overcrowded clumps that could use a bit of thinning. It's important to know which irises you are seeking to divide. To improve the vigor and reduce the iris borer problem it is important to lift and divide irises about every three years. Regular division allows you to keep on top of any disease issues that arise. Sign up for a free trial and get access to ALL our regional content, plus the rest Spread the roots out around the rhizome and then cover the roots and the rhizome with dirt. Ginger Plant Division : How To Divide Ginger Plants, Moving Plumeria Plants : How And When To Move A Plumeria, How To Divide Asters : Tips For Spitting Aster Plants In The Garden, Silver Torch Cactus Facts – Learn About Silver Torch Cactus Plants, Are Succulents And Cacti The Same: Learn About Cactus And Succulent Differences, What Is An Old Lady Cactus – How To Grow An Old Lady Cactus Flower, Thick Tomato Skins: What Causes Tough Tomato Skin, Fungicide For Seed Potatoes To Prevent Problems Growing Potatoes, Plants Lost To Deer: Living With Deer Damage, Epic Garden Failure – Watering Plants And Killing Plants, Cactus Houseplants: My Journey Learning To Grow Cacti. Work the fork around the bearded iris plant and gently lift the rhizomes out of the soil. Is your clump looking raggedy and overgrown? Large clumps can be divided to rejuvenate them if flowering has become reduced at the centre of the clump. Iris unguicularis are low-growing clump-forming irises with beardless flowers that flower in late winter and early spring. It’s important to divide and replant at the right time of year. Consider giving some to family and friends. Using a shovel, dig up entire clump. Read on. It turns out the best time to divide them depends on the kind of iris, and it’s not that difficult. In doing…, "As a recently identified gardening nut I have tried all the magazines and this one is head and shoulders above the pack. Try not to spear or cut the rhizomes. Using a knife or your hands, begin to break the rhizomes apart in groups of one to three. Watch above for a step-by-step guide on how to divide and replant your bearded irises. These form a network that stores food produced by the leaves. Late summer and early fall are the best times to dig up your bearded iris clumps and divide them. Are you sure you want to delete your notes for this recipe? Water the newly transplanted iris plants well. To divide irises, use a spade or garden fork to carefully lift them out of the soil. Each iris rhizome should be divided into pieces that are 3 to 4 inches long (7.5 to 10 cm.) Next, brush of as much dirt as possible from the iris rhizomes. Shake the dirt off as much as you can. This can be remedied by lifting and dividing their rhizomes to give them a little more space. Get complete site access to decades of expert advice, regional content, and more, plus the print magazine. Iris Basics: Dividing and Sharing Your Irises. Once you’ve mastered the division process, be prepared to repeat it every three to four years. This article applies to the bearded iris. Read on here for even more information. Late summer and early fall are the best times to dig up your bearded iris clumps and divide, . Try not to pierce the rhizome with the fork. Step 1. Learn how to divide and re-plant irises in your garden.From the Southwest Yard & Garden series. Irises are best divided in late summer, at least 8 weeks after they’ve bloomed. Bearded iris should be divided in the late summer when the weather starts to cool. Or has it simply been a long time since your irises were divided? 1. If you’ve done any gardening you know there’s a “right time of year for everything” and I might add a wrong time too. Transplanting iris is a normal part of iris care. You can probably get away with dividing through mid-September. Thanks, again. Divide clumps in autumn, or wait until after flowering has finished in spring It was a small way to say thank you for the efforts…. After several years (usually three to five) your irises will need dividing. Once the iris rhizomes have been divided, you can replant them. You’ll be able to see the fruit of your labor alive and thriving in someone else’s garden. Next, plant the iris rhizomes in the selected location. The next step in dividing iris plants is to divide the iris rhizomes. Steps to dividing your bearded irises. When the leaves die back in fall, dig up the bulbs and separate them before replanting in … Shake off the excess soil and use a sharp knife to slice away individual rhizomes. To thin, cut the leaf blades back to about 4 to 6 inches in length. Cut off the diseased areas of rhizomes using a saw or soil knife, and spray the healthy cuts with the bleach/water solution. Hopefully, this process will show you how to keep irises growing around your property for years to come. and have at least one fan of leaves on the rhizome. Water the divisions in well. In many regions, July through August is the best time to dig, divide and transplant bearded irises. Keep reading to learn more about replanting bearded irises. 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