By Glojo19
United Kingdom 
I have some violas and pansies which were lovely now they are all covered in black spot ? Is it worth chopping all the leaves off and hope they regrow or should I just pull them up and bin them
14 Jan, 2018
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Hard to say, depends when you planted them and how bad they are. If you cut them back or take all the leaves off now, they will die because they're unlikely to put out new leaves if the weather's cold. It will be a fungal infection - as to which, the link below might help you decide, and also decide whether to give up on them or not. If its not Pansy Downy Mildew, one or other of the fungal sprays mentioned might cure them and prevent new growth from succumbing. Don't plant pansies in the same soil again for a couple of years.
https://www.rhs.org.uk/advice/profile?PID=571
14 Jan, 2018