Hi guys. Need some help. A customer/friend has a Japanese weeping cherry tree (this is what she said it's called, I had no clue myself). She said her husband planted it when just a little 12" thing. Now it's about 4' tall and maybe 6' around (trunk is maybe 4" around). Woman is concerned it's not growing tall enough. She thinks the "weeping" branches are just growing too long and too heavy to allow it to grow taller. So it's going wider rather then taller. She points to neighbors same species of tree that is taller and about same width. Questions are: How do I go about pruning this type of tree? Will the right pruning promote height? She wants it done next week (when I trim hedges). Any input would be greatly appreciated. Thanks.