Posted 7/1/2011 02:24 (#1843507 - in reply to #1843231) Subject: RE: Morning Glory in Corn
NW Washington
I am guessing you are dealing with field bindweed and it does show up when things warm up in the late spring.
It is one tough weed that can stick around for years even if you kill all the top growth.
Here is a bulletin with info on controlling it.