What type of plant is this ?
Answers: It could be any number of plants. If you have a picture, it would be better. But the two that come to mind, for me, are a Philodendron (inside) or a Hosta (outside). You don't say if it's an indoor or outdoor plant.
The white indicates that it is variegated but we need a pic for baptism. There are hundreds of plants which qualify as white in the centre and grey green.
Size of leaves? Vining? etc., etc.
You can try to use this site to identify your plant.
http://www.plantcare.com/encyclopedia/
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