Hi Charithea,
that's good news about the gauras getting established in your garden.
It took us a few years to get ours going and now they are self-seeding.
A couple of years ago I found a plant with pure white flowers, without the pink shading in the sepals or calyx. Sadly the cuttings I got died but this season I found the hardware store in Bendigo had it in their nursery section as tubestock! We got it too late to plant out before summer so I hope we can keep it going till it's cool enough to get it into the ground,
cheers
fermi