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10-Jan-2005
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#1 |
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Botanical Ninja
Join Date: Jan-2005
Location: Toronto
Country: Canada
Posts: 2
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Brown spots on Ficus Benjamina
Hi I'm new to the forums and new to bonsai, my Ficus Benjamina is dropping its leaves and has brown spots on the leaves. I'm sure its dropping its leave becasue I moved it to a less humid cooler part of the house, but i'm really worried about the brown spots on the leaves. Does anyone have any idea what is causing this?
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Brown spots on Ficus Benjamina |
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11-Jan-2005
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#2 |
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bonsaiTALK Master
 
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Do the spots show on the green leaves before they turn yellow or after?
It is not possible to say what causes these spots without seeing them because ficus leaves can be spotted by at least two different microorganisms: 1- Anthracnose spot caused by Colletotricum which are greasy appearing yellowspots at first then turning rusty or brown with a yellow halo when older. 2- Bacterial leaf spot caused by a Xanthomonas sp. which are angular yellowing turning brown and limited in size by the leaf veins. Both of these spots are caused when the leaves remain wet for periods that last from 12-24 hrs. Leaf drop is a physiological process caused by a sudden change in temperature and light condition or with uneven soil moisture condition. If you send a close up picture of the spots, it might be possible to identify them. |
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