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Top Questions About Iris Plants

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Questions About Iris Plants

  • Answered by
    Heather on
    September 26, 2011
    Certified Expert
    A.

    You should be ok to divide them. With irises, you want to be more concerned about when the ground will freeze, rather than frost, so you should still have a few weeks for the plants to settle before that happens.

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  • Answered by
    Nikki on
    October 24, 2011
    Certified Expert
    A.

    This article will help you:
    https://www.gardeningknowhow.com/ornamental/bulbs/iris/storing-iris-rhizomes.htm

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  • Answered by
    Heather on
    November 21, 2011
    Certified Expert
    A.

    Leave the roots intact for now. Trimming them before storage may stress them rhizomes and cause them to die while being stored.

    60-65F should be fine to store them.

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  • Answered by
    Nikki on
    December 12, 2011
    Certified Expert
    A.

    This is really dependent on where you live. In a warmer climate, those with mild winters, they are normally transplanted in fall. However, it's generally better to wait until spring in most areas, so yours should do fine. For more information on transplanting/dividing, these article will help: https://www.gardeningknowhow.com/ornamental/bulbs/iris/dividing-transplanting-iris.htm
    https://www.gardeningknowhow.com/ornamental/bulbs/iris/divide-bearded-irises.htm

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  • Answered by
    Heather on
    April 22, 2012
    Certified Expert
    A.

    It is not. You may occasionally may get a tuber in a clump that is a sport, where its color is different from the mother plant due to a mutation, but this is a natural process and is not something you can cultivate.

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  • Answered by
    roseman on
    May 5, 2012
    A.

    Typically the color change in Irises are driven by some chemical application, such as the use of the herbicide RoundUp will cause color changes. Other wise the reason for a color change is that the irises divided had some less dominent colors in the mix but being crowded kept them held back. Once these less dominent color mixes were in a new and less crowded location, they came forth in bold fashion.

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  • Answered by
    Nikki on
    May 16, 2012
    Certified Expert
    A.

    Thinning them out will help them bloom. When they get over-crowded, they will not bloom. The soil may also be depleted of phosphorus, which also helps flowers bloom. Add some phosphorus to the soil and you should get blooms this year. Here is more information:
    https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/phosphorus-plant-growth.htm

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