By Barnyboy
Derbyshire,
United Kingdom 
I have a knautia which Ilike very much but this year it has developed some sort of disease. The leaves have a residue on them making them go grey and limp and it is not flowering as well either.
Anybody know what this is?
Barnyboy.
4 Jul, 2013
Answers
Thanks Seaburngirl, I'll give it a try.
4 Jul, 2013
Previous question
« Hi I have a plant that comes up every year but I don't remember planting (but...
one of mine is like this. its mildew an fungal infection. you can spray it with a fungicide from the gc.
4 Jul, 2013