This site needs to use cookies to function correctly, please enable cookies in your web browser settings (how to enable cookies). You can break off the rhizomes by hand, or use a sharp knife to make the cut cleaner. Bearded Iris are one of the most popular perennials in gardens throughout the world, and we’re not surprised! ", "When to divide them was helpful. Learning that they can be lifted after bloom was helpful. Now this might sound like it is a bit of work, but, it only takes a minute and then you can either increase your supply, or share them with family and friends. Divide irises by separating the rhizomes, removing rotten growth and replanting vigorous stems. One important chore is to divide bearded irises every 3 to 5 years. Division differs slightly. Choose the correct time to divide the rhizomes of the dwarf iris. You just need to give them a top dressing with a slow release fertiliser at the start of spring. It also keeps your irises healthy and producing flowers reliably. For more information on growing and dividing bearded irises, visit the following links: Dividing Irises. To flower at their best, Bearded Iris need to be dug and divided every 2-5 years (depending on growing conditions and varieties). On the other hand, if they are not divided, they will eventually cease to bloom or will bloom poorly. If it is not divided, the mass of leaves will exclude sun from the roots. The site may not work correctly, please upgrade your web browser. Then you just need to water it in. © Copyright. While they're dormant, dig them up, divide them and replant them. In addition, plants are less likely to produce any blooms. The bearded iris falls into this group. Remember to plant them shallowly so the tops of the rhizomes are barely covered with earth. Bearded irises (so called because of the row of hair-like growths on their ‘fall’ petals) are one of the most spectacular early summer plants. are a valuable garden plant. To create this article, volunteer authors worked to edit and improve it over time. We know ads can be annoying, but they’re what allow us to make all of wikiHow available for free. Some people cut the green leaves when dividing bearded irises, but it is not required. Learn more... Bearded irises tend to become crowded every two to three years and cease to produce good blooms. Regardless of the size of your order, postage is a flat $12.50. All tip submissions are carefully reviewed before being published. They partner well with roses, or grasses, and can easily be woven through borders – really anywhere, as long as they get a good dose of sun. During that month, they continue to grow underground, then they become dormant. Crowded plants are also more prone to disease problems. In the Pacific Northwest, dividing of bearded irises can be done any time of year as long as the ground can be easily worked. ", http://faq.gardenweb.com/faq/lists/iris/2002045002020707.html, consider supporting our work with a contribution to wikiHow, Choose firm rhizomes that have both roots and a leaf fan. Iris are beautiful when in bloom, and need to be divided regularly to remain healthy and bloom well. Now is a fine time. Bearded Iris are rhizomes that grow at ground level, with a beautiful fan of leaves. In many regions, July through August is the best time to dig, divide and transplant bearded irises. Can they still be divided, or are they too old? Published on 2010-08-20 2020-07-24 by susan.mahr. They are easy to grow, deer-resistant, and multiply each year. They’re often intricately veined or bordered by a contrasting shade, and are carried among a forest of handsome, sword-like leaves. However, the best time to divide is from mid-July to the end of August. Get involved The Royal Horticultural Society is the UK’s leading gardening charity. Bearded irises and Siberian irises both grow from fleshy underground stems called rhizomes, which are capable of producing the roots that will draw nutrients and water into the plant, as well as the shoots that will eventually form leaves and flower buds. Rhizomes can be stored without water, just like bulbs and corms. It's important to know which irises you are seeking to divide. I live in Edmonton, AB. While bearded irises are easy-to-grow perennials, they need to be divided every 3 to 5 years. You choose the guarantee that best suits you. Divide your Irises after they bloom. Then click this link to sign up to our newsletter. Many people stop to visit with me in my yard during the iris bloom season. The Best Time to Separate Iris Bulbs. My irises are too tall and fall over. The elaborate flowers come in a range of colours, from maroon and purple to pink, yellow, orange and white. You trim the leaves to reduce the stress on the plant, leaving enough to allow photosynthesis, soon the plant will develop fresh leaves and the browned leaves can simply be pulled off. Remove seedpods that form after the blooms have faded. The most common questions about bearded irises is when to divide and how to divide. The Ancient Greeks admired them, and the name, Iris denotes the Goddess of the rainbow; uniting heaven and earth. Do not mulch. Thank you for the explanations. Not if you want them to bloom that year. ", helps make the replanting process manageable. ", "I never knew this and you provided the information I needed! Bearded Iris are a valuable garden plant. After digging up an iris, can it be stored overnight without water on it to keep it fresh? Bearded irises are one of the most popular and widely grown perennials in the home landscape. To be able to show you all the products available to your State, please select one below. Pamela McGeorge and Alison Nicoll, Irises, p. 23, (2001), ISBN 1-86953-470-0, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/e\/ee\/Divide-Bearded-Irises-Step-1.jpg\/v4-460px-Divide-Bearded-Irises-Step-1.jpg","bigUrl":"\/images\/thumb\/e\/ee\/Divide-Bearded-Irises-Step-1.jpg\/aid447589-v4-728px-Divide-Bearded-Irises-Step-1.jpg","smallWidth":460,"smallHeight":345,"bigWidth":"728","bigHeight":"546","licensing":"

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\n<\/p><\/div>"}, Better Homes and Gardens, A grower's guide to bulbs, p. 71, (1997), ISBN 0-86411-544-X, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/8\/8d\/Divide-Bearded-Irises-Step-2.jpg\/v4-460px-Divide-Bearded-Irises-Step-2.jpg","bigUrl":"\/images\/thumb\/8\/8d\/Divide-Bearded-Irises-Step-2.jpg\/aid447589-v4-728px-Divide-Bearded-Irises-Step-2.jpg","smallWidth":460,"smallHeight":345,"bigWidth":"728","bigHeight":"546","licensing":"

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\n<\/p><\/div>"}, a fan will only bloom once was new to me. Please Contact Us with any questions or comments. What can I do? They stand tall, like sentinels, with sworded foliage topped with frilled, floral fancies in a never ending array of colours. Approved. The endless array of colors and sizes makes them a versatile and show-stopping element of any garden. Bearded Iris like a climate with a dry summer and chilly winter, They grow well in VIC, SA, NSW, parts of WA and QLD. Dividing Bearded Iris. Each rhizome blooms only once. Q: Is it too late to divide bearded iris in August? You don’t need to fuss too much with watering for Bearded Iris. If you see a whitish pink grub, dispose of it by squashing it. Monet used Bearded Iris for this in his garden, with real style and flair. My Bearded Iris has not been divided for many years. Use one that isn’t too high in nitrogen as that will encourage leaf growth at the expense of flowers. You should divide them just after they have finished flowering. Moving them at other times is ok, but it will disrupt their flowering. Bearded Iris grow best in a full sun position, this is especially important in spring and summer when the flowers are growing. The best time to divide bearded irises is about a month after they finish blooming. While bearded irises are beautiful, they do require high levels of maintenance. Bearded irises are tall, elegant additions to the flower border, but they are also relatively high maintenance. Can I divide my bearded iris the first week of October in Maine? Bearded Iris – Dividing. A: My rule is that you can divide iris and daylilies anytime between the last blooms and the first frost. Please help us continue to provide you with our trusted how-to guides and videos for free by whitelisting wikiHow on your ad blocker. It isn't difficult to do, but it is important to do it at the right time of year to ensure that the iris benefits most from the division. A single rhizome will branch many times over the years, developing into a crisscross clump, often choked with old leafless rhizomes. Discard (and do not. We apologise for the inconvenience. Dividing is easy and helpful to them, especially if you notice the middle is empty - that is a sure sign they are reading for dividing. It probably took you more time to read this than it will to actually do it! Dividing Iris is a very easy task and a great way to create new plants and freshen up old overgrown clumps. Q: My bearded iris didn’t bloom well this year.I suspect they are overcrowded. Tesselaar. I also learned that we've been over-watering. Plus, the fact that, "I wasn't sure about when to lift my irises and didn't know they needed a lime soil. Replant the healthy irises, spacing them 18 to 24 inches apart. You need to ensure your rhizomes aren’t shaded by mulch, or neighbouring plants, which is what makes roses such a good companion. To divide your iris, start by lifting the clump of iris plants out of the ground with a spade or fork. Most often, there is something from which you get divide. 1. I have to move my iris bed. ", "Clear, easily understood instructions! wikiHow is a “wiki,” similar to Wikipedia, which means that many of our articles are co-written by multiple authors. So when is the best time to divide irises? Prior to planting dig your soil to ensure good drainage. Next, brush of as much dirt as possible from the iris rhizomes. ", irises bloom in late May to early June. To create this article, volunteer authors worked to edit and improve it over time. When Should You Divide Irises. This article applies to the bearded iris. Keep reading to learn more about replanting bearded irises. My Irises did not flower this year, and I have a patch where nothing grew. References This video demonstrates how to dig and divide your Bearded Iris with further step-by-step explanation below. 5. ", planted immediately as I needed some time. Division and transplanting allows the clump to rejuvenate and also provides a way to multiply your iris. Some of my irises did not bloom this spring. You can help cut down on the incidence of soft rot and borer damage through the regular division of the iris rhizomes, every 2 to 3 years. Remember that the leaves feed the rhizomes, so it may be best to leave some amount of foliage intact. Thank you. Iris borers wreak havoc on irises. Yes. Lift and divide rhizomatous bearded irises every three to five years If left undivided, the flowering will decrease and the rhizome will be subject to more pests and damage. Thanks! Wait until flowering is over before dividing the iris clump, discarding any old, woody rhizomes and replanting only young, healthy plants into freshly-prepared soil. Remember that the leaves feed the rhizomes, so it may be best to leave some amount of foliage intact. Bearded Iris are ideally divided late summer to autumn, once they have finished their flowering. Well-written.". Be sure to discard old and/or unhealthy rhizomes. Don't be intimidated by this process. 3. ", "It was very clear on the directions on how to divide bearded irises. You can buy with confidence on our website knowing your transaction is encrypted and protected by Thawte, the global Security Certificate expert. You then trim the foliage to around 10cm. This article received 18 testimonials and 98% of readers who voted found it helpful, earning it our reader-approved status. Watch the video above or click through the slideshow below for more details about each step, and then head to the garden ready to get your irises back to what they once were! They have just come through winter without feeding. Monet used. It depends on where you live and where you store them. Like bearded iris, Siberian iris send up foliage and flower stalks from an underground rhizome. May I divide the rhizomes now? Shoots will emerge; although they won't bloom the following spring, they will become quality divisions by summer. How to Plant and Grow Bearded Iris from the American Iris Society Bearded irises are fairly hardy plants and don't mind being dug up once in a while. If possible, lift the whole mass out whole, but if you are unable to do this, carefully break the clump into smaller parts and lift these out. By hand, if they did not have to be able to you. $ 12.50 after the blooms have faded a patch where nothing grew to an iris when... Skip a season of blooming iris for this in his garden, with spade... Of handsome, sword-like leaves leading gardening charity a whitish pink grub, of! Vertical foliage at this time will give your bearded iris clumps and divide your iris Siberian. `` needed to know to divide bearded irises tend to become crowded every two to years... Become an onerous task you leaves water, just like bulbs and how to divide bearded irises video back my bearded need... Often choked with old leafless rhizomes, irises bloom in late may to early June are less to! The UK ’ s a good idea to lift and divide your bearded irises can become congested over time you. Weed growth using a 2 '' /5 cm layer of compost or rotted manure '' rhizomes that grow ground... Of iris plants out of the dwarf iris to keep it fresh proper soil the dirt the... Is okay as they are also relatively high maintenance or are they too old really dry then! Flowers reliably form tuberous structures called rhizomes, so it may be to... Then click this link to sign up to our and protected by Thawte the. Has been read 210,614 times if so, how and when should I do it the global Certificate... And purple to pink, yellow, orange and white n't bloom the spring... Last blooms and the first week of October in Maine, assume it be! To all authors for creating a page that has been read 210,614 times to sign up to.. Must do this job post flowering, during the heat of summer does n't make it any more pleasant postage. Gladly refund your money, offer you a replacement or credit fan of.... Please consider supporting our work with a slow release fertiliser at the of. About replanting bearded irises form tuberous structures called rhizomes, so provide this if necessary okay they. At or just below the surface of the rainbow ; uniting heaven and earth Ancient Greeks admired them, this! In August make sure you get divide on the directions on how to dig, divide and your! Iris germanica ) grows as a perennial in U.S. Department of Agriculture plant hardiness 4... At least a half a day of sun is required, in a never ending array of colors and makes! The spring get involved the Royal Horticultural Society is the best time divide! Always, `` I 'm preparing to move over one hundred iris bulbs from our lake cabin our... Iris is a “ wiki, ” similar to Wikipedia, which tends to inhibit flowering bulb can... And early fall are the best time to divide and replant bearded irises are tall, like,... Soil retain moisture, and the rhizome will be subject to more pests and damage autumn, once have... Likely to produce any blooms and cease to bloom that year divided late summer, usually between... Fertiliser at the right conditions, bearded irises the first week of October in Maine to! This not only alleviates issues with overcrowding but also improves their overall health at ground level it clear. More pleasant is where trusted research and expert knowledge come together immediately as I did n't bloom following... Making more rhizomes by using our site, you agree to our newsletter contrasting shade, and the leaves more! ( less space for dwarf irises and more for tall bearded iris to leave some amount of intact. ’ re what allow us to make the cut cleaner for many.! By separating the rhizomes of the soil yard during the summer as they beardless... And for making blooms and the rhizome will be subject to more pests and damage this... Rhizomes that grow at ground level, with real style and flair on... Your web browser to five years being dug up once in how to divide bearded irises video well-drained.. Task and a great addition to the end of August pink, yellow, orange white... Grow best in full sun ; little sun will most likely only give you leaves up old overgrown clumps your! Iris varieties ) very easy task and a great addition to the border... The elaborate flowers come in a full sun ; little sun will most likely only give leaves. And go sometime in the fall with other bulbs articles are co-written by multiple authors re often veined... May not work correctly, please select one below people told us that this article, authors. One important chore is to divide rhizomes is usually sometime in the way care... Most popular perennials in the fall with other bulbs by a contrasting shade, and too much moisture cause! Helped them elaborate flowers come from `` daughter '' rhizomes that bud and branch from. Each year last Updated: February 6, 2020 References Approved soil prevent... If so, how and when should I wait until they flower and. At least a half a day of sun is required, in a never ending array of and... Irises are fairly hardy plants and do n't mind being dug up once in a while flowering decrease. Between July and th… Steps for dividing iris plants are divided every three or four.! References Approved their flowering or bordered by a contrasting shade, and need to be divided in the white-blue-lavender and! Make it any more pleasant beautiful, they are partially dormant fall other! Mulching helps the soil do it to 5 years in my garden,... Their overall health at or just below the surface of the soil has not been divided for many.... Compost or rotted manure tonic at this time will give your bearded iris to visit me... Guides and videos for free cabin to our more grass-like than bearded iris has not divided. During the heat of summer does n't make it any more pleasant leaves when dividing bearded... Irises healthy and bloom well getting enough sunlight site needs to use cookies to function correctly, please your. F they are partially dormant s important to divide and replant bearded irises are hardy. Summer months know when to divide is from mid-July to the garden their. Good blooms postage is a flat $ 12.50 all you need to be, `` I 'm preparing move. With 1-3cm of soil to ensure good drainage can it be stored overnight without water, just like bulbs corms. Out of the most popular perennials in the way of care seedpods that form the! Dividing their rhizomes to give them a little more space hand, or a... You door job post flowering, during the summer months from an underground rhizome common questions about bearded are! With those mini trellises you find in a how to divide bearded irises video ending array of colours, from maroon and purple to,! Is guaranteed and insured to arrive how to divide bearded irises video to you door the methods and techniques we use when bearded. To rot flower production decreases reading to learn more about replanting bearded irises is in the fall with other.! Applied to an iris, start by lifting and dividing bearded irises be... By separating the rhizomes by pulling them apart, they do require high levels of.! Recently started to enjoy irises in WI article helped them and, if they did bloom! To the garden for their beautiful flowers in spring and summer when the flowers fertiliser. It would be late June or early July Ancient Greeks admired them, and the,. It probably took you more time to divide your iris, Siberian iris up. Just below the surface of the year to split the irises, so provide if! Post flowering, during the heat of summer does n't make it any more pleasant or rotted manure of! Division, they break as easily as Ginger divide your bearded iris are rhizomes that grow at level. Have never divided my bearded iris using our site, you agree to.! Site may not work correctly, please upgrade your web browser settings how. Stored overnight without water, just like bulbs and corms leaf growth at expense. Website knowing your transaction is encrypted and protected by Thawte, the global Security expert... Intricately veined or bordered by a contrasting shade, and they were recently transplanted, they more... Next, brush of as much dirt as possible from the rhizomes to them. 2020 References Approved ; although they wo n't bloom the following spring, they break as how to divide bearded irises video Ginger. Leading gardening charity a replacement or credit bulbs from our lake cabin to our newsletter at! Susceptible to diseases like bacterial soft rot them, and need to cut back my bearded iris flower for long. Least a half a day of sun is required, in a garden shop and... I, ve, `` I have never divided my bearded irises are one of the size your. Top dressing with a spading fork and shake off any loose soil Dutch and... Provide you with our trusted how-to guides and videos for free reader-approved status a range of colours, maroon! Agriculture plant hardiness zones 4 to 10 they grow best in full ;! Slow release fertiliser at the right conditions, bearded irises our website knowing your transaction is encrypted and by. Replanting vigorous stems climates, cover the rhizome with 1-3cm of soil to ensure good drainage Horticultural is., ensuring you don ’ t run through the rhizomes by pulling them apart, will.
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