mystery tree– ID please?

mystery tree– ID please?

I never saw these before but the mature trees are lovely, they are not tgoo tall, oval in shape and flower a very pale green, I believe this is a baby one but what is it? http://i39.photobucket.com/albums/e166/paleriter/mystery-tree3.jpg it looks like it could be messy after blooming, is it a well-behaved tree? TIA.
MY room !

MY room !

strawberry escape artist!

strawberry escape artist!

My room is too dark!

My room is too dark!

Garden Inspiration?

Garden Inspiration?

Welcome to Our Home!

Welcome to Our Home!

cherry tree

cherry tree