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  #1  
Old 01-07-2020, 12:03 AM
dendrite dendrite is offline
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New Dendrobium with soft brown leaf
Default New Dendrobium with soft brown leaf

Hello! I am brand new to orchidboard and new to orchids other than good old phalaenopsis. I bought a Dendrobium around two weeks ago and have been watering it on a weekly basis (so about twice all together). One of the leaves has begun to have some sort of rot- it is brown and mushy to touch. I am not sure if this is black rot or another bacterial rot. It does not appear to extend to the stem, rather it started at the tip. Should I cut this leaf? Should I repot the orchid? The rest of the orchid looks fine to me
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  #2  
Old 01-07-2020, 01:35 AM
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Roberta Roberta is online now
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New Dendrobium with soft brown leaf Female
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Originally Posted by dendrite View Post
Hello! I am brand new to orchidboard and new to orchids other than good old phalaenopsis. I bought a Dendrobium around two weeks ago and have been watering it on a weekly basis (so about twice all together). One of the leaves has begun to have some sort of rot- it is brown and mushy to touch. I am not sure if this is black rot or another bacterial rot. It does not appear to extend to the stem, rather it started at the tip. Should I cut this leaf? Should I repot the orchid? The rest of the orchid looks fine to me

First, welcome to the Orchid Board!

I would suggest cutting the mushy part of the leaf, and enough good tissue to be sure of removing the infected part. A single-use single-edge razor blade makes a clean cut. (If you don't have any, they are very inexpensive in the paint department of your favorite home-improvement store) You can dust the cut edge with cinnamon (a natural fungicide)

AS far as repotting goes, I can't see the condition of the medium in the photo. If it seems sketchy, repotting is probably a good idea. You have a new growth developing, which is probably producing new roots as well, so it's a good time to do it.
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Last edited by Roberta; 01-07-2020 at 01:39 AM..
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  #3  
Old 01-07-2020, 02:10 AM
aliceinwl aliceinwl is offline
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New Dendrobium with soft brown leaf Female
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I agree with Roberta’s advice. I just want to add that the browning may have been caused by cold. It takes awhile to develop after the initial damage occurs. I recently received an orchid through the mail that must have gotten chilled in transit and its damaged leaves look very similar.
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  #4  
Old 01-07-2020, 10:01 AM
dendrite dendrite is offline
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Thank you for your help! I will do just that
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