I have a lot of them. They're great because they take up less "floor space," so you can put them between other, shorter roses and not worry about overcrowding. They're easy to maintain.
You could train a climbing rose to be a tree, I suppose, by cutting all of the canes except the one in the center, but that's not how it's typically done. It's actually a three-part rose. A straight and sturdy cane is taken from a rose. De la Grifferaie is one of the preferred sources of these canes, so we'll use it as an example. It's grafted onto a vigorous rootstock, such as Dr. Huey. Then another rose, such as Charisma, for example, is grafted onto the top of the De la Grifferaie cane. The blooms will be Charisma's blooms, but the tree rose will consist of Dr. Huey, De la Grifferaie, and Charisma.
