Playing with Photoshop again :)

I'm not sure what this is, but it's pretty!  It showed up in my garden this year.  I thought it was a volunteer lettuce, but I see similar flowers growing by the highway exit ramp, so now I'm not so sure.  I showed my son the plant with lots of pretty blue flowers.  In typical fashion he responded with "Lots.  Pretty.  Blue."  Only my mother will get the obscure literary reference, but since she reads my blog I'm putting it out there for her :)