At a garden center today I saw a hydrangea tree. It looked like a real tree, with a weeping/drooping look. I was told the flowers are green in spring, white in summer and slightly pink in the fall and blooms until the frost. I would like a weeping type tree for the front of my house but it has a northern exposure and I've been told most trees of that type are not suitable. Has anyone seen this type of hydrangea? It has a regular trunk but my neighbor said it might be grafted. Would this be a good choice for my area? I live in New Jersey (southern part).