Geranium blight

I have a trailing geranium in my conservatory.  The leaves start off healthy, then go patchy yellow and finally brown and die off.  I have not had many flowers this summer.  Can anything be done?

Yellow leaves normally mean overwatering.

There is no such thing as geranium blight-it is just a sign of over-watering-they will survive quite happily with minimum watering

Yes, I agree with Geoff - there's no such thing as geranium blight, they're just too wet.

Cut down the watering so that your plants are almost bone dry before watering again, and then only give a little water.

I am very careful not to overwater and have had this geranium a couple of years.  In previous summers I have had no problems and have not changed my watering regime.

Maybe it's starving then.  Have you re-potted or freshened up the compost in the time you've been growing it?

Also, in such a cool, sunless summer, it will have needed less watering than usual so maybe it is, after all, just over watered for the conditions.

I agree with Obelixx.  You say you have not changed your watering regime - but one of the secrets of successful gardening is to understand the individual requirements of each plant and adapt your cultivation techniques according to the condtions.