By Drc726
East Sussex,
England 
My Clematis 'Comtesse de Bouchaud' is prone to lack of magnesium but I find Epsom salts corrects that but today I noticed this flower has green petals. What causes this?
many thanks Denise.
29 Jun, 2014
Answers
Thanks Steragram
I thought I had read on here once that it was to do with low temperatures when the leaves were forming?
The leaves dont seem to have anything on them, but it does look blistered
30 Jun, 2014
Don't know - not a clem grower. Its unusual isn't it?
30 Jun, 2014
Reminds me of currant blister mite. Have you looked on the back of the petals for tiny mites?
30 Jun, 2014