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problem with my roses-need help
Shiva wrote:
torgo wrote: Botrytis is NOT a bacterial infection. It's a fungus. You're absolutely right. I was confused because I saw Cass post that canker is a bacterial infection, and thought I remembered her posting that botrytis is a bacterial infection. I have always been confused about the nature of canker. This explains why my regular use of fungicide keeps this hideous crap out of my garden. Sadly, I know entirely too much about botrytis. When it just affects the aging bloom, it often looks like this: http://home.earthlink.net/~cbernstei...s/botrytis.jpg On a light pink rose, I doubt that someone would see browning petals and not see any of the polka dots that are so characteristic of the scourge. That's certainly my experience, at least. On a dark red rose it can be hard to see spots before the petals brown, but on a lighter colored rose, those polka dots are visible long before the rot sets in. Yes, I've seen the effects of Botrytis cinerea in many forms, most of which are quite disgusting. So says another poster who does not protect his or her roses from fungal disease by spraying with a fungicide. I would not know, because all I have ever seen was the telltake bloom rotting on the stem. After that, my fungicide apparently kicks in. I rather like that. I'm fairly certain that not all petal rot is caused by botrytis. Some just can't take untimely rain, gather the rain in the bloom, and self-destruct from the inside out, as described by Saki. |
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