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Thread: Black sooty stuff

  1. #1
    Join Date
    Aug 2001
    Location
    Tex .. near Dallas
    Posts
    280

    Black sooty stuff

    Have a couple of plants that look like they are covered with "black sooty" stuff. From reading other material ... they suggest it is aphids or some other bugs. They also suggest that we use "insectiside soap" to control the critters.

    Is this the cure .. where do I find it or can we make it ? If we can make it ... please give instructions for mixing and application(there was a wide difference of opinion on which types of soaps worked and which types caused the leaves to fall off .... would prefer to kill critters and not plant).

    Thanks,

    Jim

  2. #2
    Join Date
    Aug 2001
    Location
    Zone 9a - Gulf Coast
    Posts
    9,934
    Jim,

    It sounds more like a type of fungus to me. It is difficult to say what it could be. Can you put a sample of it in a zip lock bag? If so, label a zip lock with your name and phone number and what type of plant it is on, and take it to your nearest county extension agent. Use a freezer bag rather than a sandwich bag, in case there are critters in it.

    If it is on a leaf, just put the whole leaf in the zip lock bag. They will most likely be able to identify it and make recommendations as to how to treat it, if there is a treatment.
    Ann B.
    Zone 9a
    Gulf Coast


  3. #3
    Join Date
    Aug 2001
    Location
    Surrey, British Columbia
    Posts
    14

    black stuff

    Jim-been there with the black sooty leaves. The aphid diagnosis was right, too-their honeydew drops onto the leaves below and feeds a black mildew. The mildews not as bad as the aphids, but if you get rid of the bugs the mildew goes too.

    I've always used safer's insecticidal soap coz they've tested all kinds and found apparently the most deadly (potassium salt, not sodium like a lot of household soap) to insects and easiest on the plants. Lots of people do use stuff from around the house-I just hate to scorch leaves accidentally when we really don't have to spray very often anyway (healthy plants rarely get many bugs).

    Go get 'em, Jim!--Glen in BC

  4. #4
    Join Date
    Aug 2001
    Location
    Tex .. near Dallas
    Posts
    280

    Safer's soap

    Glen,

    Where do u find "safers insecticide soap"?

    Not much garden supplies around here .. may have to find in Dallas or Waco.

    Thanks,

    Jim

  5. #5
    Join Date
    Aug 2001
    Location
    Zone 9a - Gulf Coast
    Posts
    9,934

    Thanks!

    Thanks, Glen! We did cover aphids and the honey dew in training, and your answer is absolutely correct. I have a lot of rose bushes, but rarely seed aphids, and I rarely use any pesticides.

    Jim,

    You should be able find Safer Insecticidal soap at Lowes. If they don't carry it, try Home Depot.

    Good Luck!
    Ann B.
    Zone 9a
    Gulf Coast


  6. #6
    Join Date
    Aug 2001
    Location
    Tex .. near Dallas
    Posts
    280

    safer soap

    Is this found in garden area?

    Thanks,

    Jim

  7. #7
    Join Date
    Aug 2001
    Location
    Zone 9a - Gulf Coast
    Posts
    9,934
    Jim,

    These products are found in the pesticide and fertilizer area. Ask them, if they are good like our Lowe's plant specialist is, they will point you right away to the best products. If they don't know, ask for one of the plant specialist, and if they don't know ask for the garden center manager.

    I am confident you will find the right product...
    Ann B.
    Zone 9a
    Gulf Coast


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