Dana, none of my clavifloras, shade or otherwise, have a bluish tint. Perhaps in a drier climate they will get bluer... Larry, forget about peglerae - this ain't it. Peyton

I think this is a cultivar of Rudbeckia hirta (yes, black eyed susan) that has larger blooms and more of them. The foliage looks very typical of R. hirta. Looks similar to the one called 'Indian Summer' on the link below. I'm sure there are others. Very nice. Here is a link that might be useful: Floridata

Croton is the common name. Codiaeum variegatum is one species, but I don't know enough about them to be sure that it is accurate for this one.

Don't know for sure about the first. The second, I believe, is Mammillaria elongata cristata. If you see them in their NON-crested forms, they are copperish, stand-up, spiny cacti.