How fast will this grow, and will it grow up a guideline running off an electrical pole?
yellow Trumpet Vine, Campsis radicans 'Flava" ???
How fast it will grow it depends on a lot of things, how healthy the plant is, how rich the soil, and so forth. But as general rule Trumpet vines are fast growers once they get going, although I don't know if the yellow is as strong as the orange.
You will probably have to tie it to the cable to get it started, or maybe all the way up since a cable doesn't have anything to grab a hold of.
Josephine.