Pelargonium grandiflorum is now flowering, it has large creamy white flowers with purple markings on the upper petals and maple shaped leaves. In its native habitat it grows in mountainous areas of the South Western province.
Pelargonium grandiflorum
Pelargonium Species world 
Beautiful flower. Thanks for the picture and post. How long will it bloom?
Yes, it is a lovely pelargonium, It is a fairly new plant and it is the first time it has flowered, but it should flower most of the summer here.