Trumpet vine has large leaves, and it will reach a height of 30 feet on a warm wall. Trumpet vine clings by small root-like holdfasts. It is rampant and soon becomes very heavy. Trumpet vine grows in almost any soil in full sun. Plant only where there is plenty of room for the vine to spread.
Some suggestions follow.
Zones 6 to 9. A slow-growing tree, the Franklin tree is a good choice for a shady location and can be planted successfully under a canopy of larger trees. It seldom grows as high as 20 feet. The flowers first appear in August and open continuously for several weeks. They are cup-shaped, white, and pleasantly fragrant.