Volunteer

So we opted out of growing a garden this year. We pulled out the old garden space leveled the land, and expanded it 3 times the size of the old garden. Next we will install raised beds, but we're waiting until later in the season when it cools off since we won't be planting anything this year. Right now our garden area looks like a burial ground where Percy can bury his victims. And we all know that Percy has plenty of victims. But instead of the bodies of Percy's victims we found this plant growing in the burial ground. Anyone know what it might be? It has some flowers that just started blooming and one that looks like it might be turning into a pumpkin/squash/thing? I'm excited to find out what we grew by accident! I wish more exciting things would grow in Percy's burial ground.