It's a bit tough to tell from the picture, but my guess would be evening
primrose.
See:
http://www.gpnc.org/evening.htm

Cheers,
Sue

Zone 6, Southcentral PA


"~ Lori ~" ljadkins@keep yer junkmail.comcast.net wrote in message
...
Can somebody help me identify this plant or weed that popped up at my
house
behind a fence? Thanks!

http://home.comcast.net/~ljadkins/ws...ome.html-.html