close! probably watermelon

Probably squash or pumpkin

Not zucchini. To me it looks more like watermelon. But I might be misjudging the flower and leaf size.

Watermelon is probably the closest but it doesn't look quite right for that, either. Maybe a cross of some things.

I call them Mystery Melons.

Those look like squash blossoms to me.

I’m not a squash expert at all, having only grown a couple of types, but don't they have much bigger flowers?

IMPE, melons have smaller flowers that look like cucumber blossoms, while squashes tend to have larger trumpet shaped blooms...

I've never seen melon blossoms with pointy petals either.