Two of these popped up in my small raised bed veg. garden this year.
Possible sources: I throw all my peelings and veg scrap in the garden year 'round. But these don't look like anything I've ever seen.
And: I replaced all the dirt in the garden this spring, it was hauled in, source unknown.
At first I thought it could be okra, but the pods are different.
The red arrow shows the small yellow flower, and the yellow arrow points to these curious little pods.
Hmm, upon previewing, I see the forum has shrunk the picture down quite a bit. Dunno if anyone can see it well enough now, maybe that big leaf will help?