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Purple sprouting Broccoli

I am completely new to growing Brassicas and my purple sprouting Broccolli was growing well until last week. I noticed some small holes appearing in the leaves on some of the plants and thougt at first it was slugs. However I have now noticed that black spots are forming on the underside of the leaves, which are eating right through to the surface side and forming holes. I think this is the wrong colour for the Blister Fungus. Any ideas on what it is, whether it will effect my crop and if so how to treat it?



  • After extensive research on the internet and finding images to match my purple sprouting broccolli leaves, I have diagnosed the problem; Ring spot.  A disease favoured by wet, mild conditions. Sound familiar?!!  I can only hope in removing the infected material that the promised frost will kill off any further spread.

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