The plant appears to be a vine. It popped up in our veggie garden.
Mercer County New Jersey clematis invasive vine invasive vine clematis terniflora vine variegated vine with variegated foliage clematis with variegated leaves sweet autumn clematis variegated sweet autumn cleamatis
This appears to be a volunteer sweet autumn clematis (Clematis terniflora). This is considered an invasive plant because it seeds all over and overwhelms and smothers native plants in natural settings (e.g. parks.)
This species of clematis will occasionally produce variegated offspring. We recommend that you pull it up so it does not spread.