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roserosette

What is wrong with these buds?

roserosette
7 years ago

Some of the buds on my Port Sunlight are turning black. Is this a bug infestation? I saw few black like flies around this rose. I don't know why the buds are turning brown/black. Can someone help me to identify the problem? Do I need to spray something on it? The leaves don't have any damage, only the buds.

Thank you!


Comments (19)

  • roserosette
    Original Author
    7 years ago

    Anyone?

  • Patty W. zone 5a Illinois
    7 years ago
    last modified: 7 years ago

    Not yet, I've looked this up 4 different ways and have not come close yet. It does not look like a disease issue at least not to me. Your rose is to healthy for it to be chili thrips.


  • Patty W. zone 5a Illinois
    7 years ago

    Is that grey mold on the bud.

  • Carolina Girl (Zone 8b)
    7 years ago

    Rose midge? Google that and see if you can get answers.

  • jim1961 / Central Pennsylvania / Zone 6
    7 years ago

    The problem does not look familiar to me at all...hopefully someone can help you out vane11br...

  • roserosette
    Original Author
    7 years ago
    last modified: 7 years ago

    @ Patty, it's not gray mold. Some of the buds are turning brown.

    @Thank you Carolina Girl! I think it might be rose midge. I looked some pictures and the bugs I killed next to this rose looks like midge flies. I never had this problem with my roses. I'm so upset!

    If anyone had this same problem, please let me know how you treated. Thank you!

  • zack_lau z6 CT ARS Consulting Rosarian
    7 years ago

    It doesn't really look like midge either--they typically attack one side so the bud bends over. Sometimes you will see a black dot.

  • Patty W. zone 5a Illinois
    7 years ago

    I have rose midge here and this doesn't exactly fit my damage. As far as the midge fly goes they are nearly microscopic. Way to small to have killed one so don't panic yet. I will say that rose midge was my first guess. Simply because there are not many insects that can cause buds to wither and die like that. It's that dark brown where the bud connects to the stem that I don't get here. Maybe that is normal on some roses thou. There are ways to check for sure if it is midge. Take a look at several places on any rose that has dying buds. Check down low on the bush first. Midge will also bite soft tender growth tips and emerging lateral buds. Do you see any stems that started to grow but did not grow far. Check the very end of it to see if it is brown and sometimes has a tiny dead brown leaf. then check along the canes. Check them by gently pulling back the leaves and look where it connects to the cane. The little bud in there should be green to say light reddish. If it is brown on some you have midge.

  • oldrosarian
    7 years ago

    It sounds a lot like botrytis to me. in periods of heavy rain and cool nights, the buds get a fungus on them and then go dead inside and fail to open. Usually one sees botrytis on slightly opened or fully opened blooms which make them look brown or mushy. Just use any fungicide spray you have and concentrate on all the buds when spraying. That will make sure the other healthy ones will open okay. Botrytis is caused by weather conditions not growing conditions.

  • roserosette
    Original Author
    7 years ago

    I took more pictures this morning. Some of the new buds, they're really small are turning brown and seems dried. Most the buds/blooms are ok. I found the same kind of bug I saw yesterday laying on a leaf this morning. You can see in one picture. Could you please give any name of products that I should use in this rose? I've had this rose for just a few weeks. It was fine before. I also have another DA (Darcey Bussell) and it looks good, no diseases. Thank you so much for everyone's help.




  • Patty W. zone 5a Illinois
    7 years ago

    I think oldrosarian is correct. Don't know what is best too use thou as I don't spray.

  • zack_lau z6 CT ARS Consulting Rosarian
    7 years ago
    last modified: 7 years ago

    Daconil is effective on botrytris--but you need to wear eye protection when spraying--I use a full face mask from Harbor Freight. Due the the hazard I rarely use it--though I seem to recall it being a good way to quickly protect a lot of roses from getting ugly pink spots before a rose show--I'd mist the buds at half strength. Getting rid of dead plant material will help by reducing the number of spores.

  • Patty W. zone 5a Illinois
    7 years ago

    Thank you so much for sharing that Vasue. I've been needing something like those snips. One is on the way.

  • Kachana
    7 years ago

    Thanks for sharing that article. That's explains my Belinda's Dream's problem perfectly!

  • Buford_NE_GA_7A
    7 years ago

    I get that a lot on certain roses. Baronne Prevost and Sombreiul. I just cut the buds off.

  • SoFL Rose z10
    7 years ago
    last modified: 7 years ago

    I could be drought damage. If it's been very dry the buds can get damaged while they are forming and become droopy. Then they fail to open.

  • BethC in 8a Forney, TX
    7 years ago

    I cut off about thirty buds this morning that looked very similar. I blame mine on all the rain we've been having and days on end with no sun. The few blooms that opened are wonderful. I'll pay closer attention for other symptoms though.

  • roserosette
    Original Author
    7 years ago

    Thank you everyone for the responses. I was really concerned about this rose. So far, it is the only one showing this problem. Hopefully, it will be the only one. Thank you, Vasue, for the article. I removed all the buds that were abnormal. We had a lot of rain and cloudy days here. I will pay more attention to this issue. Thank you again!

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