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Possible RRD again

My Clair Matin leaves look like coleus. Oh dear. No witches broom or distortion. Super blood red new growth but my other Clair 15 feet away had same color so I've been watching it. Took out my nearby HUGE beloved Hermann Schmitt (after coating with entire can of Aqua Net) 6 weeks or so ago. Thanks

Susan


Comments (6)

  • 11 years ago

    Ann is our top expert on RRD.

    I agree, the stained-glass look is concerning; it reminds me that one RRD symptom is red veining on the back of green leaves. But don't do anything hasty as long as everything is structurally normal. Use twistems or string to mark the lowest peculiar leaves and see if they become more normal within several days. It may well just be a physiological disorder related to weather and water.

    Poorbutroserich Susan Nashville thanked michaelg
  • 11 years ago

    Thanks you all. This is not for the faint of heart.

    I inspected stipules and internodal distance. Seems reasonably normal. There are three laterals coming out of one node. Two from the underside of the cane and one from the top. Is that unusual? I hope these photos help. I've also called my local consulting rosiarian but I KNOW you all have seen quite a bit.

    Leaves on another part of bush

    Older cane.

  • 11 years ago

    Doesn't look like any case of RRD (really weird and ugly) that I've ever seen--but then I have considerably less experience on the topic than others on this forum.

    Lots of rain followed by very hot temps--that could easily screw up a rose temporarily.

    Kate

    Poorbutroserich Susan Nashville thanked dublinbay z6 (KS)
  • 11 years ago

    I'm paranoid but justifiably so. Ha! I will keep an eye on it. Never seen anything like it.

    I have several roses that (I'm assuming) because they've become established are really growing quickly. It's hard for me to sit back and relax because I envision my entire garden gone *poof* to RRD. I will learn to live with it eventually.

    Susan

  • 11 years ago

    "If it were mine, I'd wait about five days. For one thing, the temps are so hot that the mite reproduction is a lot lower and (I think) you and I have been having huge rain fall and that can mess up 'normal' growth."

    Ann--I'm glad to hear you say this. Several years ago my Hickory Hill Noisette produced a cane with a number of red shoots with tiny leaves that kept on appearing faster than any of them could grow to maturity. I waited a week or more, convinced it wasn't RRD, but the unusual growth made me nervous and I finally removed the entire cane and bagged it three times for disposal. This rose is quite healthy today and has never exhibited those symptoms again.

    This incident occurred after heavy rains from a hurricane that followed a drought. Yesterday I saw similar growth on Rosette Delizy and promptly removed it. While I am sure it wasn't RRD, I am uneasy after spotting what looks like RRD on some Knockouts at a nearby shopping center. I watched them from the car window for a couple of weeks and the small frilly green leaves at the top of several plants never grew to full size, nor did I ever see normal flowers on them--only a few petals here and there. I think I also saw large red leaves growing out of or above the small frilly growth on one of the plants.

    There are a number of these Knockouts in the median strip and most are still quite normal. I'm hoping the cause of the unusual growth may be Roundup, but I reported the problem to the State Highway Department and the owners of the shopping center. So far nothing has been done. I don't believe wet weather is the culprit in this case although we've had plenty of rain.

    The response was so different when I reported probable RRD at Hollywood Cemetery in 2008. The manager had an expert on the scene the very next day who confirmed RRD and recommended removal of six roses.

    Lindsey