Bird of Paradise flower

About five years ago I bought five plants expecting them to thrive since they seem to survive in the most neglected gardens. They haven’t grown well, I think at least one is not much bigger than when I planted it but at last there is a flower on one and another flower spike forming. I presume this one isn’t fully opened yet.

Also flowering at the moment is a self seeded Sunflower. I thought they all had black centres but apparently not.

Another flowering at the moment is a lovely little Bottlebrush, I find the buds fascinating.