[These are perennial in San Diego. Mine has now overrun three fruit trees. But it blooms most of the year.] Black-eyed Susan vine - you must plant one of these in your garden this year - it's the vine that keeps going strong all summer long
THUNBERGIA - BLACK EYED SUSAN VINE - Pinetree Garden Seeds - Flowers - Annual in Zone but will still grow feet, rambling over itself if it is not trellised. Can be a ground cover if you let the vines trail.