I loved this post!  You made me laugh out loud.  Last summer, my front bed was full of tall "flowers" with small, white blossoms.  I even had a end-of-summer party before my botanically-oriented father finally told me I had been lovingly cultivating an entire bed of weeds.

On another note, I'm also growing zinnias in a pot from seed, and they look like weeds.  Here's hoping you get some pretty blossoms anyway!
