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Comfrey- mildew magnet??

 
pollinator
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Location: Western Washington State
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Hi,
 I have comfrey growing abundantly in my garden.  Most has spread of its own accord.  Towards the end of the bloom, they all develop a powdery mildew/fungus.  Each are in different locations. different soil, air circulation, etc., but all get the mildew.   I hate to drop it as mulch or compost it, for fear of spreading the mildew.
 Any thoughts??
Thank you!
Staci
 
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Location: Netherlands (moderate maritime climate)
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Although it has been dry and warm here in the southern parts of the Netherlands, I have the same experience with fungus on my comfrey plants. It is not the powdery mildew.

But I still chop it down, cut the stems smaller and use it as topdressing on the dried leaves mulch of my raspberry plants. Up to now the raspberries do fine and are not affected.
 
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Interesting.  i've never had mildew on comfrey, even when it's right beside other plants like pumpkins or goji berry that easily mildew.

You mention that its spread of its own accord.  Most people only use Bocking 4 or Bocking 14 varieties of comfrey because it doesn't spread by seed, only by root cuttings.  Perhaps sterile comfrey (like I've got in my food forest) isn''t prone to mildew.
 
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I joined for the same question. I have tons of comfrey with powder mildew on it, with the past advice that comfrey helps "burn out" or use up the mildew. But a year or two later, there is still a lot of mildew, and I begin to worry about chop and dropping the mildewy leaves. Some sources say it's no problem for the fruit being mulched by the comfrey, but I have it below a young peach that had leaf curl. Wondering if it's bringing the mildew back into the soil and should be removed instead.
 
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