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  #1  
Old 10-02-2019, 05:17 PM
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black spots on petals
Question black spots on petals

I am guessing this is normal for an old flower, or is it ?


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  #2  
Old 10-02-2019, 07:39 PM
aliceinwl aliceinwl is offline
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Looks like bothrytis. Older flowers are very susceptible. Keeping water off the flowers can reduce the chances that they’ll get infected. I have this show up on most of my outdoor plants when the flowers are nearing the end of their life no matter how dry I keep them. I haven’t had any issues with it appearing on new flowers unless they’ve been subjected to something like a day of cold rain.
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Old 10-03-2019, 05:42 AM
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Ok, thanks.....
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Old 10-03-2019, 08:08 AM
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Water on the flowers is not a requirement. It is an indication that the atmosphere around the plant is too moist and stagnant.
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Old 10-03-2019, 11:45 AM
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Cold can also encourage botrytis. This time of year, with nights getting cooler, any chance that plant got a chill?
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Old 10-03-2019, 03:42 PM
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It's been very humid and stagnant here, not very cool yet....
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Old 10-03-2019, 03:48 PM
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If it is very humid, even a small temperature drop (like overnight) can lead to condensation on the surface of the flowers - and the dreaded botrytis. If the air is stagnant, a fan might help prevent this sort of of thing, to keep the damp air from settling on the flowers.
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Last edited by Roberta; 10-03-2019 at 04:19 PM..
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Old 10-03-2019, 04:18 PM
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Yep, thats probably what happened condensation
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