Green’s Dictionary of Slang

1. the vagina; both in the context of copulation and as a euph. used to children.

1623		J. Mabbe (trans.) Life of Guzman I 85: That phrase which we use to little children, when we tell them they were borne in their mothers Parsly-bed.
1638		R. Brome Antipodes I iv: I am past a child / My selfe to thinke they are found in parsley beds, / Strawberry banks or Rosemary bushes.
1659		London Chaunticleers in Dodsley Old Plays XII I ii : [She] used to say that I was born to be a gardener’s wife, as soon as ever I was taken out of her parsley-bed.
1699		N. Ward London Spy VII 154: Who was he that [...] dug twice in his Wives Parsley-bed before the Good man came back again?
1700		T. Brown Amusements Serious and Comical in Works (1744) III 137: Get you home, you old cuckold, look under your wife’s bed, and see what a lusty gardner has been planting, a son of a wh-re in your parsley-bed.
1719		in D’Urfey Pills to Purge Melancholy III 9: At length it was said, / That one Mr. Ed—mond, / Did both dig and sow in her Parsly-Bed.
1722		‘Whipping Tom’ Considerations upon the Modern Skreen for a Great Belly, vulgarly call’d a Hoop-Petticoat Pt 2 34: [Hoop-petticoats] must certainly put an illiterate Beau to a Ne plus ultra, to find out what little Children call the Parsley-Bed.
1863		‘Prince of Wales’ Marriage’ in C. Hindley Curiosities of Street Lit. (1871) 68: The next two days, so it is said, sir / He began to dig out the parsley bed, sir.
1875		N&Q Ser. 5 III n.p.: ‘Babies in Folk-lore’ In England every little girl knows that male babies come from the nettle-bed, and the female ones from the parsley-bed.
1890–1904		Farmer & Henley Sl. and Its Analogues.
1909		J. Ware Passing Eng. of the Victorian Era 193/1: Parsley bed (Peoples’, Hist.). The supposed matrix of the new baby, as chronicled in nurseries.

2. the female pubic hair.

1879

‘Lady Pokingham’ in Pearl 1 July 20: See my little curly parsley bed is already half-an-inch long.