Food Plots Help Identify Plant

[TN24081]

Does anyone know what this plant/grass is ? It appears to be taking over certain areas of the farm I hunt. Any additional info gladly appreciated. Sorry for pic quality, maybe I can get a better one in the morning.

 

[Mattt]

Hard to tell by that pic but resembles fennell

 

[ADR]

Perilla mint? Should have a square stem if that's it.

 

[MickThompson]

Sure looks like dead perilla mint