Passion for Purple Plants

I recently inherited three new plants that are right up my alley!

I've always loved Wandering Jew and now I have some!

And... some of this stuff:


And one of these :)

The back porch looks so happy whenever I go out to visit these guys :)

The new trouble I'm having is that last year's purple mums are struggling. Could it be that they're getting too much sun? heat? Any suggestions would be greatly appreciated!