Answer: Clytostoma, the violet trumpet vine, is a strong-growing vine that will clamber over anything by tendrils, producing long runners and spectacular flower sprays. It would be beautiful by itself, but would overtake your pink jasmine within a season or two. You can still plant it, but you'll have to expect to prune it back to ground level every winter and remove some of the runners during the growing season. Without discipline, Clytostoma will take over everything.
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