I have the most gorgeous dark magenta coloured Pelargonium but it got a bit frazzled in the front windows as it was resting against the glass. I lifted it out the window and put it on the mantlepiece which still gets plenty of sunlight. It is now dying and I want to find out what to do to revive it. The flowers have all dropped off and the leaves and curling up and turning yellow, I feed it once a fortnight and do not over-water.
My other pelargoniums are thriving, it just seems this one!!!
Should I cut it all back and hope for the best??
If it is looking sick I would not feed it, let it be on the dry side. It could be that you have vine weevil at the roots a drink of Provado could do the trick or there is a biological control.