Green’s Dictionary of Slang

1. (drugs) marijuana that has been grown at home [such marijuana was usu. seen as inferior before the introduction of new techniques, e.g. hydroponics, that have revolutionized the former cottage industry over the last 20 years].

1974		R.R. Lingeman Drugs from A to Z (1970) (2nd edn).
1990		H. Kureishi Buddha of Suburbia 17: You naughty boys [...] Smoking home-grown.
1999		K. Sampson Powder 85: Keva flopped back on the big, once-white sofa and chilled out with the spicy home-grown.
2008		Amy Winehouse ‘Addicted’ 🎵 I’d rather have myself and smoke my home grown.
2010		A. Steinberg Running the Books 84: The satchel stashed in the trunk [...] contained enough homegrown to qualify for ‘intent to sell’.

2. (US prison) a ‘masculine’ lesbian.

1992

Bentley & Corbett Prison Sl. 60: Home Grown [...] Used in reference to ‘butch’ females.

3. (US black) an African-American (as opposed to a West Indian or Africann immigrant).

2005

R. Cea No Lights, No Sirens 88: The American blacks, or homegrowns as they’re called, took over this area during the white flight of the early seventies.