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bryanj9798

Problem In Identification

10 years ago

Kent...

As mentioned in my previous post I had an issue with one of the cannas I received from Brian W. He stated it was caused by sitting in too wet of soil and eluded to some kind of fungal issue. I used a "Plant I.D." App and the professionals of there stated it was called ring disease. So I placed two separate orders of this species and didn't water as much, put in a fresh soil mix, and still the issue presented itself in both the two orders. Is this a type of canna virus or something else. I thought it might be mosaic virus...But really I have no clue and seek your input. The species is Daddy's Sunshine.

Comments (4)

  • 10 years ago
    last modified: 10 years ago

    Bryan,

    You are certainly more tech savvy than I am. I was not aware
    of a Plant I.D. App. I guess that I am still somewhat old school and struggle
    to keep up with your ever changing tech world.

    I have some reservation with the ring disease identification
    along with the too wet cause. There appears too possible be a potyvirus symptom
    BUT I have forwarded this link to a friend that is more competent in the
    pathology/viral issues concerning cannas. Let’s await a 2nd opinion
    and I will get back as soon as possible.

    Kent

  • 10 years ago

    Thank you...I would hate to not be able to grow this one. It's located away from all my other cannas. All in all the app is amazing. You can take a picture of an unknown plant, pest, or problem and usually an expert somewhere around the world gives you a response within 48 hours or so.

    My particular problem with this daddy's sunshine canna is that the speckles lead me to think it's mosaic, but those weird long yellow-edged patterns I have not seen before and throws me off.

    The app is called garden compass...

    Talk to you soon and take care Kent


    Bryan

  • 10 years ago
    last modified: 10 years ago

    Bryan,

    Just a quick follow up with the reply I received from my
    contact at the University.

    Hi Kent,

    That is strange. I have never seen that particular type of issue before. I am
    used to seeing very linear veinal streaking, but nothing quite like that. I
    haven't run across any literature about any of the "ring" viruses
    being able to jump into cannas. But I know they have reported impatiens
    necrotic ring virus in dahlias, so maybe we just haven't looked hard enough
    yet.

    That speckling
    definitely looks like potyvirus to me, though. Very suspicious.

    Please don’t read much into the mention of “ring virus”. Let
    me be perfectly clear. No ring virus infections have ever been reported in
    cannas to date to the best of my knowledge. The speckle mottling seen in the
    leaf strongly hints of a possible potyvirus infection.

    As stated above, neither me nor my contact have seen this
    particular issue on cannas. One thing that kind of jumped out at me was the appearance
    of this problem in corn crops that I have seen; it is often identified as
    anthracnose leaf blight. See the link below.

    http://cropdisease.cropsci.illinois.edu/corn/anthracnoseleafblight.html

    You may wish to read the description of this type of infection
    but I do not believe that your canna leaf symptom quite fits the bill at this
    time.

    Ideally we would like to send leaf samples to a pathology
    lab for investigation. I am not sure how practical that is for you.

    Definitely keep this plant separated for your healthy
    plants. If you choose to grow it, I would be interested in seeing if the leaf
    becomes necrotic.

    Not sure how you are watering your plants but I suggest not wetting
    the foliage late in the day.

    Questions still
    remain,

    Kent

  • 10 years ago

    So interesting...it's so weird because the speckles looks viral however those where'd-shaped patterns are completely new. I separated them even further away from all my cannas. I water every three-four days and always at the base of the cannas.

    I would be up to sending them to a lab, but I would need to know where and to whom.

    its so weird because I've ordered like five of this particular variety and they all turned out with this issue. Never have I had an issue with one of Brian's cannas. Here's one of my favorites from him...Maui Punch

    thanks for all your help Kent,

    bryan