In article , Mark. Gooley
wrote:

How does one do it?

Any experiences or suggestions?

I know the most common mistake is to plant the rose near the trunk.
Plant the rose out by the drip line, where it won't have to compete
with tree roots. Deciduous trees are considered best, dead trees even
better. You can train most tree climbers with just a little twine at
the beginning. Most are viciously thorny and maintain their hold by
means of prickles. And apart from Mermaid, which comes to mind because
it reblooms, most are once bloomers. So they get their sun and flower
before the tree has a chance to leaf out much.

Typical of the type: Mermaid, Fortune's Double Yellow, Montecito, Belle
Portugaise, The Garland, Silver Moon, Nessie. I grew Silver Moon, not
in a tree, but it could do the work -- 12 foot canes in a 5 gal. pot.
You can find a good list of ramblers at Vintage Gardens, growth habit 5.