corrected link

Here is a link that might be useful: picture

Leaves curling as yours could possibly be a virus - "Symptoms of these types of diseases are nonspecific and can look like symptoms caused by many other disease agents. General symptoms include stunting, yellowing, curling or twisting of leaves and stems, distorted leaves and fruit, mosaics, mottles, and ring spots."

But I would suspect nutritional deficiency caused by too high a ph. Since both containerized and bedded plants are affected, do you by any chance know the PH of your water? I don't have to worry about acidity here...we're acid - soil, water, plenty of natural irrigation in mildly acidic rain. But I believe the highest PH for optimum geranium growth is 6 - 6.3.

The plant on the right might benefit from being cut back. New shoots should grow out from the base if you cut it back to three or four inches.

hi, to me it looks like heat stress and some of the leaves also looked scorched? if it is heat stress they will recover once the weather cools down and the leaves will plump up again, but if your summers are quite hot they will do better in a spot where they will get some shade during the day, especially by late afternoon.