A Weird Hillbilly's Garden

[guohua]

I need help. 

This has started growing around my Ponderosa Lemon tree.

Is it what I think it is?

Regardless what it is, I am going to blame it on the rabbits.

Is that a Watermelon plant?

That is what it looks like to me. But I have not had any watermelon anywhere close to the tree.

So I have no clue how the heck it got there.

Thanks. At least I know I am not that far off.

Bird dropping are what gives be different plants growing. I don't get watermelon, I am Jealous!