Some call them Hibiscus, but here we call them Altea.
I've always liked Alteas, they're easy to grow and continue flowering for months; just my cup of tea. Also, if left to their own devices they grow into very large bushes.
This white one (above) is an offspring of a beautiful 'double flowered' example from a friend's garden. I was given seeds on several occasions, but they always reverted to 'singles'. They are beautiful anyway.
I think I have five different colours; all nice in their own way. I couldn't photograph the blue one, it was too high-up.
I'd like to find a deep red one (I have an obsession with deep red flowers), but I'm not sure if such a thing exists.
I might go on an Altea hunt.