Beginner Gardening: Dave's Garden meet my mystery garden, 1 by brwnidg1rl

brwnidg1rl wrote:
Hello all! After reading the posts of others who have unidentified plants growing in their gardens I have decided to post my pictures also. Long story short I am now the proud owner of a mystery garden. I really have no idea what is growing in this garden. I live in Northeast Tennessee and I am the most beginner of beginner gardeners just to let you know ahead of time.
Any advice at all would be appreciated - I'd especially to know if I can eat it, if should pull it, trim it, or just mow the whole thing down and start over!

We'll start with this little guy growing over in the corner all by himself
#1