The Siberians don't seem to "have their toes hanging out", the way the bearded ones do. Or should they? Thanks for your assistance! Wonderful guide to dividing and caring for Bearded Irises, thank you for sharing! I am moving in the near future and want to take my Irises with me as they were also gifts, I wasn't sure how to go about it, but now I'm a lot more confident about tackling the project.
I planted irises about a year and a half ago, in zone 7a -- Montgomery, AL. They have not bloomed. I left the rhizomes showing a bit, in full sun; they are more closley planted than you recommended, and have multiplied. Just no blooms. Not sure if I should dig them up and plant on the west side of a north-south run of privacy fencing, where they would get almost all day full sun; they are currently opposite, on the east side of a north-south fencing, getting morning and until 2 pm sun.
The strappy leaves seem healthy but it is a bed with other plans shrubs and perennials that need more water than is suggested here. Do they like it drier? Is the top of the rhizome near the surface of the soil?
Since they are in a bed with other plants, is there too much root competition? Are the other plants shading them more than you realize? How is the soil? Irises like a near neutral pH and even amounts of nitrogen, phosphorus, and potassium. Too much nitrogen will foster lush growth at the expense of flowers. Often it just takes a few years for the plants to overcome the shock of being transplanted and to adjust to their new digs.
Skip to main content. You are here Gardening Advice. How to divide irises and replant them in the garden. By Robin Sweetser. August 18, About This Blog. Related Articles Flowers Irises Transplanting. What do you want to read next? Planting Fall Bulbs for Spring Growing Japanese Iris. Growing the Siberian Iris.
When to Plant Flowers. Easy Perennial Flowers for Flower Bulb Problems and Solutions. How to Cut Back Perennials in Fall. Caring for Perennial Flowers. Growing Daylilies and Daylily Try not to spear or cut the rhizomes. Cut the foliage back to 4 to 6 inches. This pruning might seem harsh, but it reduces transplant shock. The old iris rhizome will have many young rhizomes attached to it and each one will have its own set of leaves.
Break off each of these young rhizomes, using your hands or a knife if needed. Once the rhizomes are divided, examine each one. They should be firm and have several leaves emerging from them. Discard those that are old and thick, especially if they have no top growth. Also discard those that are shrunken, shriveled or soft. Some gardeners wipe the rhizomes with a solution of 1 part chlorine bleach to 10 parts water to prevent disease problems. Of course, it only works with rhizomes that are healthy to begin with.
Replant the healthy irises, spacing them 18 to 24 inches apart. Remember to plant them shallowly so the tops of the rhizomes are barely covered with earth. Dividing Irises. Today, she lives and gardens on the high plains of Colorado.
My bearded irises are beautiful, but this year only the first bloom was good. Second blooms died without opening. Do you have any ideas? It did rain more than usual this year in Los Angeles. Pl help. If replanting in the same location, remove any debris and incorporate compost first. Iris are often placed in groups of three divisions arranged in a triangle, with each fan of leaves pointing away from the other irises in the group.
To plant the rhizomes, prepare a shallow hole with a low mound in the center. You may add bone meal to the bottom of the hole but since iris are not heavy feeders additional fertilizer is not needed in all soils.
The rhizome should be placed horizontally on the mound, spreading the roots down the mound into the surrounding trench. The plant will grow from the end which has the fan of leaves, so point the rhizome accordingly in the direction you want it to grow. Then fill in the hole, leaving the top of the rhizome barely exposed or just covering it with no more than an inch of soil. Place the rhizomes shallowly on a mound in the planting hole L and just cover the rhizome R.
Bearded iris in bloom. Bearded iris is susceptible to root rot if buried too deeply. Tamp down the soil and water thoroughly after planting. Keep the soil moist but not wet until new foliar growth occurs. Newly planted iris should be mulched their first winter after the ground freezes to prevent damage to the rhizomes from alternate freezing and thawing.
Remove the mulch in early spring. Transplanted iris will only bloom sparsely the first spring after replanting. Ask Your Gardening Question. We teach, learn, lead and serve, connecting people with the University of Wisconsin, and engaging with them in transforming lives and communities.
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