Black Bind Weed

Ran into Friend Wilma at the post office.  "You like jigsaw puzzles." she said.  "I have been working on the worst puzzle I've ever tried."  She explained that it's a 750 piece puzzle w/ nothing but square shapes.  It's a garden w/ a hedge maze leading from one piece to the next.  The picture on the box is similar but not an exact depiction of the puzzle.  When she finally finished there were sixteen pieces missing and another three pieces left over.  "I dumped it in the garbage!" she proclaimed.  A mischievous look came across her face as she looked at me.  "You know, I don't think we've had garbage pickup yet..."  I quickly said how nice it was to see her again and practically ran for the car.