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rebeccah_2009

Help from michaelg

17 years ago

I am having problems with rose slugs and I like your advice you give other people. my roses are infested with them. i thought I got rid of them once but they are back. i don't have the patience to go through and pick all these off. I'm also having blackspot problems on angelface. is there a good product that is not outrageously priced that will wipe these two things out. I sprayed this morning with a product that contains neem oil and it doesn't do it for me. If I buy a new product can I spray It again today?

Comments (5)

  • 17 years ago

    Rebeccah, thanks for the compliment, but I don't think you should address questions to a particular person. Around here we all rely on each other's brains to correct our mistakes.

    Oil products work by smothering, so it may take a while. You should check tomorrow to see if there are worms left alive. I don't spray for rose slugs. If I did, I would probably try Safer's Insecticial Soap. The concentrate, not RTU; hand picking is faster and easier than using a squirt bottle. Soap takes 24 hours to kill insects.

    The county extension agent might recommend spinosad. You may be able to find this as Ferti-lome Borer, Bagworm spray or Monterrey Insect Spray. It is relatively safe and , unlike many insecticides, will not encourage spider mite outbreaks. It does kill rose slugs.

    For blackspot on Angel Face and your other modern bush roses, many of us recommend Bayer Rose, Flower. . . Disease Control containing only tebuconazole-- not the combo products. Spray weekly for three weeks and then every two weeks should be enough. The cost is 31 cents per gallon of spray mix. After the damaged leaves die off, you should see very little BS or mildew. If you do (AF is a little disease monster), go back to weekly spraying or replace the worst varieties.

    It's possible the oil might interfere with the fungicide being absorbed; I would try to wash it off somewhat.

  • 17 years ago

    Rebeccah, thanks for the compliment, but I don't think you should address questions to a particular person. Around here we all rely on each other's brains to correct our mistakes.

    The other thing is the post may go unanswered if Michael didn't come here for a few days; then when he did, the place moves so fast he may never see it.

    If you do feel you need to "speak" to one person in particular, you might think to look at their member page to see if you can email them directly.

    Years ago this was done (making help posts to one person), to where it almost looked like this was the only person people wanted to answer their posts. Long story short, a lot of people left who I have not seen back.

  • 17 years ago

    Thanks so much for the useful information, I recently started getting roses, and the foliage on mine looks terrible since I've done nothing but water so far. They bloom like crazy anyway, but I would like them to be healthy as well. Interesting thing though, is that mine are full of powdery mildew, but my neighbors' are full of blackspot. Not even my Angelface has it, nor any of the same ones that have it over there. Cross my fingers it stays that way. My powdery mildew is awful though.
    Lately I've been seeing cobwebby things on some... is that the dreaded spider mites?

  • 17 years ago

    Maele, for spider mites you examine the lower leaves-- pallor and stippling on the upper surface, and a dusty, dirty look to the underside. With a 6x lens you can see the mites, eggs, and webbing.

  • 17 years ago

    Michael's advice is perfect. If it is spider mites the cobwebby stuff will be quite fine, like some sort of very, very tiny disorganized spider web very close to the leaves and leaf midribs.

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