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| Welcome to the official Canadian Iris Society (CIS) website
Time to plant your new varieties of irises researched from iris catalogues and acquired from commercial sources or iris society sales. Also time to divide and replant your existing irises. Irises respond positively to this procedure every 3 years or so and they will grow better giving you better bloom in following years. At this time you may choose to refresh/replenish the soil. Irises consume soil nutrients and again they will benefit from this replenishment. Suggestion is to work only one clump at a time to more easily keep track of the variety name. Dig with a pitch fork and shake out the excess remaining soil. Then rinse off the remaining with a garden hose. Break and cleanly cut the clump into individual rhizomes, discarding the old growth and any diseased parts. A little practice on this and you will start to find it easy to assess the good from the bad. Inspect the rhizome for iris borers. Trim the leaf fan at two 45 degree angles to form a point leaving approximately 6 to 8 inches of leaf fan. Trim the roots to 4 to 6 inches. After trimming the leaf fans down mark the correct name of the iris onto the leaf fan with a “Sharpie” marker pen. Next disinfect the rhizomes in a 10 percent solution of water and liquid bleach for about 15 minutes. Not too strong on the bleach/water mix and not too long on the soak. Lay out the rhizomes in the sun to dry. Replant a group of 3 to 5 of the better rhizomes from each variety keeping care to maintain the identification of the variety. Garden signs with the plant names and a back-up map are good ideas. If you have iris rhizomes left over why not donate them to your local iris sale. Only correctly named, AIS registered plants, please. These sales help provide funds for the functioning of your iris society. If necessary store them temporarily in paper bags or open cardboard boxes in a cool dry place until auction/sale time. For more please see the Cultural Information area of the CIS website. Further items regarding iris culture are also available in the Editorial section of the CIS website. Index CIS website: We welcome you to explore our CIS website and hope that you will find it a useful resource of information on all things iris! Follow the links that appear across the top of every page to navigate the various areas of the website. Happy Gardening. History - information on the
Canadian Iris Society (CIS), includes historical background.
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