Ganjaponics

Any type of marijuana grown using a hydroponic method.
From the words Ganja + Hydro(ponics)

That ganjaponics sure does smell like skunk.

Ganjaponics by Jamaican Ranger December 7, 2005

Ganjanomics 

The economic study of the arcane market of supply and demand for marijuana. This study attempts to quantify the balance between supply, demand, and how much people are willing to pay for marijuana because they're high.

"Dude he said a dime bag was gonna cost me $120. How does that even happen?"

"Just toke up man, it's ganjanomics!"

Ganjanomics by Nick Jr. March 26, 2009