In The Garden: Can you Identify this super hardy plant?

Hello,

Super hardy flowering plant - requires virtually no watering and takes full sun with ease.
It seems to bloom all year round here in Australia (looks beautiful), is self seeding and dislikes rich moist well drained soil.

Cheers

 

Catharanthus roseus.

 

Thank you!

I have a few more hardy plants I'm trying to ID, they grow with very little water and full sun.

The last pic looks like a weed with black and green berries. I'm wondering what it is?

 

3-4 is Asplenium sp., perhaps A.antiquum or A.nidus

 

Thanks again!

Number 5 - possibly Solanum nigrum?

 

First two pics look like a gardenia.