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10-May-2008
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#1 |
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bonsaiTALK Neophyte
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White
I am new to the list & have been keeping trees for about a yr now. I have run into a problem with some of my trees getting White almost powdery looking spots on the leaves & branches. When I go to scrape this off it is very sticky on my fingers. I have tried spraying with an insecticide even to the point of soaking, but it doesn't seem to help. It is a House & Garden insect spray from Garden Safe. Please help me fix this if possible.
thanks Karl |
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17-May-2008
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#2 |
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bonsaiTALK Craftsman
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Do a search for powdery mildew and see if it appears to be what you have.
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Click here for bonsai trees and supplies |
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17-May-2008
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#3 | |
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bonsaiTALK ArchMaster
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Quote:
It could be powdery mildew, or woolly aphids, the sticky leads me to believe it to be woolly aphids. I find some denatured alcohol and a soft tooth brush works best in removing stuff like this. It is better than spraying in my book, sprays often do more damage than they resolve.
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The only finished bonsai is a dead one; me 1992 MABA Des Moines Iowa |
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17-May-2008
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#4 |
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Bonsai Master, in my mind
Join Date: Feb-2005
Location: Back Home in Northern California
Country: USA
Posts: 1,919
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G'day Karl...
The following info is based on my experience...my opinion... You should conclusively identify the critter you are after…whatever it takes, identify the culprit...and conclusively identify the species of the plant being attacked. Then, and only then, treat your plants, soil, etc., for that specific pest. If necessary, take samples of the pest, damaged plant, infested soil, etc., to a qualified local nurseryman, and or your local Agriculture Extension Agent (or whatever your government agency happens to be) to get help identifying your pest. Also, you should never use a "cide" of any description unless it is indicated, ON THE LABEL...for your species, AND for the identified critter. Once you have accomplished identification, you should start with the least toxic treatment (spray with clear water, whatever) recommended for your particular problem. If the “least toxic” doesn’t work, move on to the next “least toxic”, etc. And, always read the label! Not only read it, but follow the directions! For 10 years or more, I have used CARL'S SOAP SOLUTION for whatever bad critters have invaded my bonsai...successfully, I might add. Heeeeaaaarrrrssss Carl's... CARL’S SOAP SOLUTION INGREDIENTS Water Dish Detergent Rubbing Alcohol Vegetable Oil DIRECTIONS Fill a gallon jug with water and add one (1) or two (2) tablespoons of dishwashing detergent and one (1) tablespoon of vegetable oil (or Neem oil). Shake up the gallon jug to mix the ingredients. Pour this solution from the gallon bottle into a spray bottle and just before using add 1 to 2 two caps full (from the rubbing alcohol bottle) of rubbing alcohol and spray immediately. If you do not use the full bottle of spray, the next time you are going to use the soap/alcohol solution add the same amount of rubbing alcohol again, since the alcohol will evaporate. You can store this soap/oil solution in the gallon jug for months on end. It does not seem to go bad. Spray on plants covering all leaf and stem surfaces. You may have to spray from three to four times with intervals of three days. This works for almost any kind of pest that attacks your trees, including scale. I do not wash off the spray and have seen no adverse reaction to the trees from this mixture. From Carl L. Rosner, 4/11/2007 Once again...my opinion...it works for me. Try it...it might work for you...or not. Pat
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BONSAI isn't about surviving in a storm, rather, how to dance in the rain. THE ONLY WAY: Always remember, and don't ever forget, that whatever you read here is not cast in concrete... the intent of any advice is to help. In no way should you feel that I’m saying that my way is the only way…heaven forbid! I've seen far too much of the "my way or the highway" attitude in bonsai as well as in other areas of life. Pat Patterson...Bonsai in the Greater Bay Area, Northern California
Last edited by PatArizona : 17-May-2008 at 06:00 PM. |
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