This creation is the device of the inhibition weed growth of a plant cultivation,System is formed the box body of downward transmission by the engagement of 2 half box bodys,2 half top surfaces of 2 half box bodys dock and have a perforation,It is worn upwards for planting the stem of cultivation,And what keyhole periphery setting plural number tear off line,The 2 half bottom edges engagement of 2 half box bodys forms a bottom side portion again,And wear element using at least two and respectively penetrate bottom side portion by wearing column symmetry,And respectively by wearing the upside for supporting solid what bottom side portion by seat of element; Accordingly,It is worn upwards by the stem that the perforation of box body provides plant cultivation,Box body masking what is set to plant the stem base portion of cultivation,Weedy device can effectively be prevented to constitute,And tear perforation periphery line can be torn off gradually,Make the gradual aperture for expanding perforation,With gradually thick in response to the stem planted when planting growth,And reach the device for inhibiting weed growth both with practicability and progressive.本創作係一種植栽之抑制雜草生長的裝置,係由二半盒體接合而成向下透空的盒本體,二半盒體之二半頂面對接而具有一穿孔,以供植栽之莖幹向上穿設,且於穿孔周邊設置複數的撕離線,又二半盒體之二半底邊接合而成一底邊部,且利用至少二穿設元件各由穿設柱對稱穿透底邊部,且各由穿設元件之按座抵固於底邊部的上側;據此,藉由盒本體之穿孔提供植栽之莖幹向上穿設,使盒本體遮蔽於植栽之莖幹基部,以構成可有效杜絕雜草叢生的裝置,且可漸次撕開穿孔周邊的撕離線,使漸進式擴大穿孔的孔徑,以因應植栽成長時之莖幹漸粗,而達到實用性及進步性兼具的抑制雜草生長的裝置。