Growvember 

Growvember is the name given to the challenge of not shaving one's face for the entire month of November.

Bob: Dude, what the hell is up with that gnarly beard!?
Bill: I'm growing it for Growvember.

Growvember by Immortal-Jake November 23, 2009

Growcember 

Follow-up to No Shave November. Not shaving for the entire month of December.

Guy 1: Hey man No Shave November is over you can shave now.
Guy 2: Nope it's Growcember.

Growcember by Pippenthebest November 30, 2011

grovember 

The month of November where you let your hair grow out and refuse to shave in order to support health awareness

On the tv show The Voice, Adam Levine and Blake Shelton participated in grovember by not shaving for the whole month.

grovember by Sammy2300 November 11, 2013