Need some help figuring out what's wrong with my camellia bush.
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Douglas Hunt on Mar 05, 2012Mark, the photos you sent are quite small so it is hard to see the detail, but white spots under the leaves of camellias are generally an indication of scale. The problem does not appear to be serious at this point, and you could probably get rid of them with by wiping the leaves with a moist paper towel. (You could use a good blast of the hose as well, but you need to make sure to get the under sides of the leaves.) The next step would be to use a horticultural oil. Are any of your neighbors growing camellias? While your live oaks are probably providing an ideal amount of light, it is possible, being right on the coast, that your soil is far more alkaline than than camellias prefer. If you have not done so, I would recommend having a soil test done. I ruled out camellias after I found mine was 7.7. You can get the forms from your local extension office or online here: http://soilslab.ifas.ufl.edu/ESTL%20Tests.aspHelpful Reply
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Donna McCrummen on Mar 05, 2012The camelia at my house in Arlington had a similar looking problem. It was huge and overgrown. I hacked it. It grew back. Good luck.Helpful Reply
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Erica Glasener on Mar 05, 2012Mark, it could be tea scale. Here is a good link with information and treatment recommendations. Scroll down to the section on scale. http://www.clemson.edu/extension/hgic/pests/plant_pests/shrubs/hgic2053.htmlHelpful Reply
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Walter Reeves on Mar 05, 2012I think it's mite damage. scroll down midway here http://scouthort.blogspot.com/2009_07_01_archive.html need a hand lens to examine the back of the leaves to be sureHelpful Reply
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Lynn M on Mar 06, 2012If you spray with malethion - it may help. Also, if you put a cigarette in a spray bottle and wait for a day or two, then spray the leaves, it will kill whatever is eating the leaves.Helpful Reply
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Erica Glasener on Mar 06, 2012I was wrong and I agree with Walter, the good news is you don't have to use chemical sprays, just horticultural oils!Helpful Reply
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Douglas Hunt on Mar 06, 2012I noted in the link Walter supplied that Camellia sasanqua is not susceptible to Southern red mites. This is one of several reasons why they are often a better choice for Florida than Camellia japonica.Helpful Reply
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Mark H on Mar 06, 2012I appreciate everyone's comments. Walter's link was perfect! Douglas - to answer your question - I do have two other camellias growing in the yard that are healthy and are growing in similar conditions. I will remember your tip about camellia sasanqua for future purchases. Erica - you are right....it is good news that I may be able to correct the problem using horticultural oils and not chemicals. I went to Lowes yesterday and bought Neem Oil Extract. I have never used oils before. I assume the old leaves will not recover but the new growth should be fine if this works? Instructions say to treat every 14 days. Does this mean I treat from now on or should I stop treatment at some point if the condition clears up?Helpful Reply
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Douglas Hunt on Mar 07, 2012Mark, horticultural oil is generally not effective on eggs, so you will need to apply two or three times following label directions to break the reproductive cycle. Once that is accomplished, there is no need to continue with the treatment.Helpful Reply
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Erica Glasener on Mar 07, 2012Mark, I'm sure that Douglas answered your question about treatment. I just wanted to add that with all plant problems IPM (Integrated Pest Management) should be the approach. Resort to spraying only when you have a problem (as you noted with your camellias). A few insects should not alarm gardeners. Keep plants healthy, amend your soil, right plant in the right place (cultural conditions) all lthis helps. Sounds like your camellias will recover. Best of luckHelpful Reply
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Lori M on Mar 09, 2012We get the same thing and use worm casings. It's a natural solution and works like a charm every time. We use in on hydrangea as well.Helpful Reply
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Janet D on Mar 09, 2012I probable is scales because white mites usually are on the underside of the leaf. I would go to your local nusery and bring them a sample and see what they tell you to use. Let us know how you solve your problem.Helpful Reply
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Mark H on Mar 09, 2012Thanks to everyone for responding. I bought Neem Oil and have sprayed the camellias. I'll let you know if this solves the problem.Helpful Reply
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