Snail Creeper, Paseollus caracalla, or Snail creeper Vine, is one of my favourite plants. It has very unusual flowers, being curly like a chell or a snail shell. It has many folds in the flower. It id a soft leaved plant and not invasive. It is easily trimmed from where you do not want it. I give my plant a severe trim in July/August which is winter time in southern Australia. Most of the leaves are gone by this time so it is easy to see where you want to snip the vine. When the plant is trimmed all the winter sunshine comes through our north facing window. In Australia the sunshine comes from the north. We were in China last year and found it difficult to get our bearings because their sunshine comes from the south. This beautiful vines gives us shade from the hot sun in summertime. It also gives us beautiful perfume as the bi colour flowers are scented. We wanted to enjoy the perfume so planted this near a doorway. When the door and window are opened in the evening the perfume is exquisite. This plant is rare. I would love to share a photo with you but try my site http://www.ebay.com.au/itm/Snail-Creeper-Vine-15-Seeds-Fragrant-Purple-Flower-Phaseolus-caracalla-/170883523337?pt=AU_Plants_Seeds_Bulbs&hash=item27c973a309 for lots of photos and different seeds. Enjoy.