From The Oxford Companion to English Literature:

Kailyard School, from 'Kail-yard' (cabbage patch), a term applied to a group of Scottish writers who exploited a sentimental and romantic image of small town life in Scotland, with much use of the vernacular; the vogue lasted from about 1888 to 1896. Leading writers in this vein were J. M. Barrie, 'Ian Maclaren' (John Watson, 1850-1907), and S. R. Crockett (1860-1914).... See G. Blake, Barrie and the Kailyard School (1951).