The Noxious Weeds Order (Northern Ireland) 1929
The Ministry of Agriculture by virtue and in exercise of the power for this purpose vested in it by the Weeds and Agricultural Seeds Acts (Northern Ireland), 1909 and 1929, and of every other power in that behalf enabling it, hereby declares that throughout Northern Ireland all plants of the undermentioned species are noxious weeds for the purposes of the Weeds and Agricultural Seeds Acts (Northern Ireland), 1909 and 1929 :-