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Top Questions About Canna Lilies

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Questions About Canna Lilies

  • Answered by
    GKH_Susan on
    August 3, 2019
    Certified Expert
    A.

    Every plant can be affected by some kind of rust. The treatment can be pretty simple, but the best method will be prevention. This usually occurs when the soil remains wet for too long. If you can help it, make sure to let it dry out pretty well between watering.

    You can treat, and prevent with the same method. Apply wettable sulfur and dolomitic lime together, once or twice per year. This will make the soil condition highly unfavorable for infection, but almost perfect for the plant. It will kill any bad things lurking in your soil.

    The old growth will not recover, and the spots will not go away, but after treatment they will not spread or be on new growth.

    This article will help: https://www.gardeningknowhow.com/ornamental/bulbs/canna/canna-lily-care.htm

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  • Answered by
    BushDoctor on
    August 7, 2019
    Certified Expert
    A.

    I will assume you mean Canna plants.

    This sounds, to me, like the soil may be too rich in nitrogen. This will cause plenty of leaf growth at the expense of flowering.

    You can add phosphorus and potassium to help flowering, or purchase a soil that is high in phosphorus in potassium and low in nitrogen.

    This article will help you to care for Cannas in container: https://www.gardeningknowhow.com/ornamental/bulbs/canna/planting-cannas-in-pots.htm

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  • Answered by
    GKH_Susan on
    August 16, 2019
    Certified Expert
    A.

    In zone 7a, your cannas should come back when left planted in the garden. (pot may be too cold, however). They are probably a lost cause, but I would go ahead and plant them in the yard just in case they decide to sprout.

    https://www.gardeningknowhow.com/ornamental/bulbs/canna/storing-canna-bulbs.htm

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  • Answered by
    BushDoctor on
    August 22, 2019
    Certified Expert
    A.

    There is quite a bit of fuss about this.

    They are all Tropicannas. Depending on the nursery that got the genetics, it took the name accordingly. Essentially, they are the same, just branded by a different nursery.

    This article will help you with the care of canna plants: https://www.gardeningknowhow.com/ornamental/bulbs/canna/canna-lily-care.htm

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  • Answered by
    BushDoctor on
    August 29, 2019
    Certified Expert
    A.

    It is very hard to say without seeing the plant, and where it sits. If the correct conditions are being provided, then they will grow easily, and without fuss. This article will help you to know what their care requirements are: https://www.gardeningknowhow.com/ornamental/bulbs/canna/canna-lily-care.htm

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  • Answered by
    Gambit on
    August 30, 2019
    A.

    The 1 sprouting new growth, the new is as tall as original plant. Hope this new info helps figure out what I am to do. Thanks!

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  • Answered by
    Gambit on
    August 30, 2019
    A.

    I tried adding a photo but it wouldn't allow. Sorry for that. They're all in pots, on South side of my home. Some morning sun but almost all afternoon amd early evening sun. I live in Zone 9a. 2wks ago I was given 6 more, 3 green and 3 maroon leaded. The 4 I originally started with are green. All of them are growing new leaves, 3 have flowered with 1 flowering a 2nd time, 5 of them are spreading new growth in their pot but 2 of them are exactly the same when I received them. Not dying or wilting or changing colors, which I guess is a good thing, but strange that those 2 are about 1ft talk amd have stalled. The 1 with sprouting to planting

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  • Answered by
    GKH_Susan on
    September 1, 2019
    Certified Expert
    A.

    Looks like canna rhizome rot. I notice too very wet conditions in the soil around them.

    https://www.gardeningknowhow.com/ornamental/bulbs/canna/what-causes-rotting-canna-rhizomes.htm

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  • Answered by
    BushDoctor on
    September 2, 2019
    Certified Expert
    A.

    They definitely won't turn into an iris, but they can revert colors, especially in unstable lines. This can also be explained by competition. One color can outcompete, and kill off other colors. This is the most likely scenario. This happens fairly often.

    The best thing to do will be to only plant like types with like, and keep them in separate beds that cannot be accessed by one another to prevent this in the future.

    This article will help you with canna lily care: https://www.gardeningknowhow.com/ornamental/bulbs/canna/canna-lily-care.htm

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