I would like to grow a New Dawn climbing rose and a Yellow Trumpet Creeper up a pine tree, together. I would also like to grow a Golden Showers climbing rose, a Yellow Trumpet Creeper, and a Jackman Clematis up an oak tree together. Should either of these ideas pose a problem?
Growing Climbing Roses and Other Flowering Vines Together
Sounds like it would be quite beautiful actually. In order for them all to remain beautiful it will take some maintenance on your part. It would be okay for each to stray a little bit into the others space but not alot. It would be easy for one to overtake the other if left to their own habits. The lighting situation could hinder the growth rate and bloom production of them as typically not much sunlight gets in and around under pine trees or oaks for that matter. Keep in mind that Pine trees create high acidity soils conditions too.