Green’s Dictionary of Slang

shrubbery n.

1. (also shrubs) the pubic hair.

[UK] ‘My Own Darling Kate’ in Rakish Rhymer (1917) 149: I’ve caught crabs from the ‘shrubs’ round the high German c—ts, / Caught the ‘fire’ from the Bridgets so nate.
[UK]Farmer & Henley Sl. and Its Analogues.

2. (also face shrubbery) whiskers.

[US]S. Ford Shorty McCabe on the Job 3: I don’t know what there is special about a set of frosted face shubb’ry that sort of suggests bank presidents and so on.
Alexandria Times-Trib. (IN) 20 June 1/2: He is also the inventor of a new-fangled mustache that bids fair to revolutionize the growth and fashion of face shrubbery.
Palladium-Item (Richmond, IN) 8 May 5/1: [headline] Reporter’s Face Shrubbery Wins Name ‘Mobile Hedgerow’.
Chula Vista Star (CA) 1 June 1/6: [headline] Best-Whiskered Men to Get Prizes — ‘Smoothies’ to Pay [...] It’ll be ‘Pay Up’ [...] for Chula Vista males without ‘face shrubbery’.
[US]Salt Lake Trib. (UT) 10 Mar. 11/4: [headline] Eciders Sprout Shakespearian Shrubbery Beards for the Bard.
Mercury (Pottsdown, PA) 19 Apr. 29/1: Some baseball teams have made their players cut their hair and face shrubbery.
[US]Monteleone Criminal Sl. (rev. edn).

3. (US) eyebrows or eyelashes.

San Antonio Eve. News (TX) 9 Jan. 5/3: Kitty, Minus her Face Shrubbery, Sues for $25,000 [for] having her eyebrows and eyelashes burned off.

4. (US prison) sauerkraut.

[US]C.G. Givens ‘Chatter of Guns’ in Sat. Eve. Post 13 Apr.; list extracted in AS VI:2 (1930) 134: shrubbery, n. Sauerkraut.
[US]Monteleone Criminal Sl. (rev. edn).
[US]Goldin et al. DAUL 194/1: Shrubbery. (P) Sauerkraut.