Consensus seems to be that this is a Clematis – it’s supposed to get ‘pouffies’ later on — can hardly wait!
This one is a vine that’s climbing on our fence:
Mystery vine

DSCF3659-5-150c DSCF3660 5-150c DSCF3661-5-150c DSCF3662 - 5-150c

Thanks, Kathy for identifying the 2nd and 3rd pics as spiderwort 🙂 Mystery purple flower2 Mystery Purple Flower1
Spiderwort full 6-150c