Roundup doesn’t work too well….
And this is not our corn; this patented seed corn is on Bemiss Road north of Valdosta, GA.
It's a weed, but it doesn't do much harm, and it's blue:
Blooming morning glory in the okra
Picture by John S. Quarterman for Okra Paradise Farms, Lowndes County, Georgia, 26 September 2012.