Beginner Gardening: what is causing the faded flowers and curling leaves?, 0 by tshirtguy

tshirtguy wrote:
I'm trying to figure out what is causing these flowers to fade in color and have the leaves curl up. I'm guess its a nutrition or a water thing, but would love to hear from people who really know what they're talking about (unlike me).
I have several of these plants about the backyard. Only two of them are experienceing the problem. Its happeneing to the entire plant in both cases, but not effecting any of the other ajoining plants. They whole backyard is on a water timer, so everything is getting the same water. The picture is of two plants right next to each other where one has the probelm and one is healthy and fine.
I live in Phoenix and the weather is just starting to get chilly over night. This has just started happeneing within the last 2 weeks or so.
Any help would be greatly appreciated (including the name of the plant)...

Thanks in advance!