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11-05-2007, 09:33 AM
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 Flat mite? I've been growing my orchids indoors for a few months pest free when I just noticed a few weeks ago that my den kept loosing its leaves (from the bottom to the newest top leaves). Just last week I realized that I had flat mites (red dots that don't move) and it's spread to my phal. Well, at least it sounds like flat mites from reading here. Here are the states of my plants: 1 Den: All my canes are bare except for a baby cane (3 baby leaves) 1 Phal: 4 mature leaves and 1 baby leaf (but there is damage/pitting on the 2 mature leaves) 2 Catts: No signs of damage 2 Onci: No signs of damage, but 1 is officially dead, I think, due to bad caretaking.  I wiped down the leaves, then sprayed with water and mopped them dry with a paper towel. Over the weekend, I uprooted ALL my orchids and thoroughly sprayed them with insecticidal soap (roots and all). I also cut the flowers off my phal. Did I do the right thing? What do I do now? Maybe I shouldn't have sprayed the roots? But I really want those mite GONE! I suppose I should respray next week? How does one spray the underside of the leaves without unpotting? Is the spray safe? I have a cat and a baby at home. The insecticidal soap has a rather strong odor and I'm concerned the fumes might be toxic? I sprayed outside, waiting a 15 minutes, then brought all my plants back into my bathroom because it's too cold outside. Do I leave the chemical to "soak" on the leaves? If I touch the leaves, would it "come off" onto my fingers? I'm worried about crown rot. Do I need to blow dry the crown or can I leave the soap on to make sure the mites stay dead? There were a few plusses to this problem: My plants have never looked better. The leaves are so green and glossy with the cleaning.  Also, I found so many new roots on all my plants. Some of the roots were growing new off shoots. On a sad note, one of my other Oncs. didn't make it.     |
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11-05-2007, 10:08 AM
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| sound like you have red spider mites on your hand. You might not see any mites at all. But if you see spider web on it.You can be sure it is spider mites. They are not spiders but mites. Nothing kill them except very strong miticies. They are very very contagious . I just got rid of them last month and bought a new catt 3 week ago and it was infested with spider mites. (why i didnt see that when I buy it?) Luckly i quarantine the new plant before mixing with the rest of the plant. Here what you do. - get a 5 gallon bucket (how?you figure out) and get miticies from your local nursery.(chances are you might have problem getting it.They don't come by often) Mix to correct proportion. Soak the whole plant for about 2 to 3 minutes start with the least infested onces. Take it out and drip dry. (no sun light for the next 2 day) miticies burn the leaves. - depending on the type of miticies you used. Some miticies kill the eggs in one application. The cheaper miticies ,well, kill only the adult. you have to reapply miticies 5 days from your first application. Repeat the same step soak whole plant it into miticies for 2 to 3 minutes YOU might need to reapply for the 3 or 4 time. Pray hard you don't have to! |
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11-05-2007, 10:27 AM
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| I don't think I have any nurserys close to me. What can I get at Home Depot? I looked specifically for miticides but did not see anything other than the usual Ortho and such. |
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11-05-2007, 01:02 PM
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| Chrono: I've been using worm tea for quite awhile and thankfully have not had mites. You can obtain Safer's Soap from Home Depot for the mites, I'm just not sure if it will kill all the eggs as well as the active mites. Bayers Rose 3 in 1 is also good and should be readily available. To my knowledge, neem oil will also work but some folks feel that it's hard on the orchids and may even present other problems. I've used the neem for scale but never had mites, so don't know about it's use for same. Cynthia has quite a few posts on the forum regarding mites. Do a search for mites and see what recommendations she has made for these critters. Good luck. Last edited by Sharyn; 11-05-2007 at 01:04 PM. Reason: add text |
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11-05-2007, 01:17 PM
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| I had gone through Cynthia's sticky on mites before deciding to ask for help/advice. It appears that Neem oil doesn't quite produce the expected results and yet affects the orchids in a not so good way. From using the search function, I can't find a definitive answer on how to best get rid of mites which is why I posted. I'm hoping that over time, more products would have been tried and tested. Last edited by chrono; 11-05-2007 at 01:19 PM. |
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11-05-2007, 02:39 PM
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| chrono, I posted about pesticides, and no one has tried the ortho or otherwise, and it is very poisonous. Bayer 3 n 1 is what is recomended by Cynthia currently, but I can only get it here in a huge bottle. I am trying my own mix currently, have only sprayed once so I cannot say if it is working or not for sure. I think the safer's soap will work just fine, it is what was recomended to me, I just ordered some.
__________________ "If nature ever showed her playfulness in the formation of plants, this is visible in the most striking way among the orchids. They take on the form of little birds, of lizards, of insects, a man, a woman, sometimes like a clown who excites our laughter. They represent the image of a lazy tortoise, a melancholy toad, an agile, ever-chattering monkey. Nature has formed orchid flowers in such a way that, unless they make us laugh, they surely excite our greatest admiration." Jacob Breynius |
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11-05-2007, 02:54 PM
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| I have been recommending neem, but I have had the very disagreeable situation where the neem is not killing mites like it used to, even tho they say mites can not develop an immunity to neem. My neem available around here is the hydrophilic extract. I am wondering if some sort of manufacturing problem has arisen, tho I think I have used neem from different stores, it was always the Fertilome brand. I have just started to use Bayer Advance 3 in 1, not to be confused with the 'All in 1' or the 'Rose and Flower' or the 'Tree & Shrub' or the 'Lawn and ... . None of those work on mites, only the B. A. 3 in 1, and it appears to be very gentle on all my orchids. So far the results are very good. I hope I never have to use the neem again, just to much damage to too many plants. Flat/Phal mites do not make webs. They also have a very long life cycle compared to spider mites, a month for flat mites, compared to a week for spider mites. So you want to respray 3 or so weeks apart. When you spray, put on a rubber/latex glove and lift the leaves to cover ALL surfaces, especially the underside of the leaves, where mites spend all their time. They are chlorophyll eaters, so don't worry much about flowers or roots. I bought the 3 in 1 at Lowes.
__________________ Cynthia Prescott Orchid Society  |
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11-05-2007, 03:05 PM
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| Cynthia, I have 2 different kinds of neem here. One is pure neem oil and I have not used it yet. The other in the green spray bottle, did a total number on my plants, and on one the leaves look like the ones you had pics of. I am very reluctant to try the new bottle of the pure neem (of course I would dilute it down) for fear of the same issues, but maybe it is a manufacturing issue. The first bottle of spray that I got did not bother the plants at all, the second bottle that I got, that is when I began to have problems.
__________________ "If nature ever showed her playfulness in the formation of plants, this is visible in the most striking way among the orchids. They take on the form of little birds, of lizards, of insects, a man, a woman, sometimes like a clown who excites our laughter. They represent the image of a lazy tortoise, a melancholy toad, an agile, ever-chattering monkey. Nature has formed orchid flowers in such a way that, unless they make us laugh, they surely excite our greatest admiration." Jacob Breynius |
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11-05-2007, 03:17 PM
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| It would be very interesting to get some feed back on the pure neem about any damage from that.
__________________ Cynthia Prescott Orchid Society |
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11-05-2007, 03:30 PM
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| Well, I guess I can give it a go with the Dends, the other stuff did not bother them either. I am reluctant to use it on the plant that got it's leaves so messed up, but it was fine through the first bottle also. This is originally why I made my post about the pesticides was for the dends, as the neem in the green bottle was not killing the mites at all. I thought they were just getting reinfested, but maybe we are onto something here. I only sprayed one with my homemade cinnamon solution, I will make up a batch of the pure neem into spray and hit the other dend. then I will have a comparison. I just really want to get rid of the darn mites for sure. If it is a manufacturing issue, I am throwing it out, I went through the first bottle so fast because I used it on all of the outdoor plants and it worked great. I will let you know about the pure neem, I will spray the plant after I get out of class tonight.
__________________ "If nature ever showed her playfulness in the formation of plants, this is visible in the most striking way among the orchids. They take on the form of little birds, of lizards, of insects, a man, a woman, sometimes like a clown who excites our laughter. They represent the image of a lazy tortoise, a melancholy toad, an agile, ever-chattering monkey. Nature has formed orchid flowers in such a way that, unless they make us laugh, they surely excite our greatest admiration." Jacob Breynius |
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11-05-2007, 04:24 PM
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| So, do you all think just sticking with my insecticidal soap is sufficient? Sprayed thoroughly (underside included) every week for a month? Or every 2 weeks for 2 months? Or should I abandon the insecticidal soap for the Bayer Advanced 3 in 1? I like the I. Soap because the chemicals aren't too toxic. |
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11-05-2007, 05:12 PM
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| mites need miticies. I tried soap before, i tried spraying water they came back. I tried miticies they came back also but after 2 or 3 spray they are gone for good. |
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11-06-2007, 08:04 AM
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| Digitalgate, I read that soap and miticides both affect the all stages of mites only, not the eggs, so both have to be followed up with spraying again after 2 weeks. I know that water doesn't always work well since it only pushes the mites off the leaves. Are you saying that even with respraying insecticidal soap a week or 2 later did not get rid of the mites? |
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11-06-2007, 08:40 AM
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| you are absolutely right! You can see them slowing crawling after third concentrated spraying of miticies . But it seem that soaking them in the chemical does the trick. 2 or 3 minute soak. I used two different type of miticies in the same treatment. Boy, the plant is really under stress. The bottom roots dont seem to be living. Luckily my Mokara grow lots lots and lots and lots of roots after that. From now onward never ever buy any plant that has mites. isolate new plant before introduce them to the rest of the family. |
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11-06-2007, 02:44 PM
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| I have mites in the area around my greenhouse, so I think this is going to be an occasional problem for me, not something I will be finally rid of if I keep up the miticide sprayings. You have a better chance in a home, or in a greenhouse without a local population outside. Digitalg, what kind of miticide are you using, brand name?
__________________ Cynthia Prescott Orchid Society |
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11-06-2007, 05:17 PM
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| gee, that will be a tough one. I am using a agricultural miticies mean for the commercial grower. I dont have the label on it. It is suppose to kill the mites and the egg in one application. I mixed it with Dimethoate . There specific miticies depending on type of mites. |
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11-06-2007, 09:46 PM
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| Well, I was interested because you said it wasn't working. Unfortunately, mites can develop a resistance to any one miticide, so the commercial nurseries will use one for several sprayings, then change to a different type. Maybe your mites are already immune to the miticide you are using.
__________________ Cynthia Prescott Orchid Society |
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11-07-2007, 01:00 AM
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| you could be right. I would be shopping for another type of miticies. Thank you for your advise. |
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11-07-2007, 10:46 AM
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| See if you can find out what you have from whoever gave it or sold it to you. And then you might ask them what they would recommend as a truly different compound type. If you do some research, you will find that they, the chemical industry, assigns a type number to the different compound categories, and you need to be sure that your next version is of a different category from the one you have, or you will be wasting your money. I haven't had to face this research project yet, but I do know that it is not really very easy to find this info.
__________________ Cynthia Prescott Orchid Society |
